Alternator Exciter Wire Not Working

Short circuit caused by current return from a. Unfortunately, the convenience that comes with this type of charging system presents a challenge for many users. The reading should show between 0. I now have a wire running from a switched fuse (forget which one, but I could look), through a diode to the exciter terminal. If the battery light in the cluster doesn't come on with ignition switched on, and go out when engine is started, the blue alternator exciter wire is broken somewhere. When you switch ign on the wire goes to earth internally through the alternator and the warning light comes on. This is a simple indicator. Two wire means that you use the main battery wire to the back of the alternator and also ignition wire to the #1 terminal to activate the alternator. There are other options* to disable Module power when engine is not running if no YELLOW lighting wiring is available. As previously stated the idiot lite on the dash is the "exciter" for the alternator. This contains the terminal connector AND an extra resistance wire pigtail to connect to the ignition system (don't use a ballast resistor if you use a resistance wire). 1-wire alternators will not have a way to hook up a warning light, but most custom applications work well with a voltage. The working of an alternator is based on the principle that when the flux linking a conductor changes, an emf is induced in the conductor. This wire is a resistance wire and gets brittle and prone to breaking especially up front where the fan can cause it to move or vibrate. Actually no it won't. I naver ran an exciter wire until i bought the Pusher from rocky and it had an exciter wire on it. Change Wire Size Gauge 6 GA. " Should this wire be connected somewhere?. The generator start for weekly off load test and after few seconds its automatically shutdown and on the control panel, there is an indication of 'generator under voltage'. So i started digging around and I found out with help from this thread and another post online that said to ground out the alternator exciter wire and see if the lights came on and they did. I would check the state of the voltage regulator first. There are several things you can do to get to the bottom of a non-working alternator The first thing you should look to is the ignition wire that activates the alternator. Go to your alternator connectors. • B is the alternator output wire that supplies current to the battery. To summarize if alternator is generating12V+ with engine running, then alternator is OK and likely problem is wire connection corrosion or break paying particular attention to alternator exciter wire with key on. Stine Public Library File ID 7f44d64 Creator : Ghostscript A Case Tractor Wiring Diagram For Alternator Page #1 Introducing A Case Tractor Wiring Diagram For Alternator Ebook May 06, 2019 ^ A CASE TRACTOR WIRING DIAGRAM FOR ALTERNATOR ^ By R. Is the alternator sense wire intact? There should be a small gauge wire running from the alternator that eventually connects to the alternator idiot lamp in the cluster. They may not be and that would cause the alternator to not charge the battery. Thanks for the reply,, The alternator only has two connections one is the heavey battery one, and the other is the exciter wire i have fed my own connection from the ignition flick switch to a. Random "Slip" and "VDC OFF" "ABS" Lights 'ON' [Summarized] spinoff from thread Random "Slip" and "VDC OFF" Lights 'ON' Well, I saw the 23 page 5 year old thread and a few others so I pulled out possible symptoms and cures many people have relayed on the Slip / VDC / ABS lights. An alternator or AC generator is an electrical machine which converts mechanical energy into alternating electric energy. B5 AFN, Battery light on - brand new alternator! From engines to interiors , have you a question or can you help, ask and answer here ! Moderators: desertstorm , water01 , vwnutant. I have wire red wire 715 to alternator output poist and have re-used the original wires to the external regulator. As my coach seems to like stressing me out. If you're not seeing battery voltage on the D+ wire, there is likely a wiring problem in the voltage supply to the alternator light itself. 15 volts while disconnected but only battery voltage (12. Thank you, and my name is Emmanuel, you can contact me through this Number, Electronic is Sweet ooooooooo. My stock alternator's pulley is about 2 1/4", the new high output is about 1 7/8". So, if you have voltage on the blue wire ( 3-10 volts), voltage on your orange wire powering the stator, and no output, alternator is probably defective. Also read: What are Electrical Drives? Working & Operation of AC Drives. Remove the spark plug In general, this process should be performed after the engine has cooled. This last trip things went bad again, so I stopped and shutdown the engine. This alternator has an internal regulator and only has an "exciter" wire. The other end of the alternator light is connected to an ignition positive. I like to see what the alternator is actually doing, not just voltage. All of the Hitachi kits use the original generator belt to run the alternator. When running check the small leads on the gd one this will tell you which one or ones is hot. Dash Group Includes wires to connect gauges, indicator lights, and switches to their proper sources. When it is very cold outside, before you start your car, Turn on your headlights for a min or two, and turn it off again. May 01, · With the engine running at idle, my alternator is putting out 14 or so volts. alternator ground wire connects to a bolt on the top of my engine. total loss of power. Took alternator to a rebuilder who said it was fine but was not getting exciter. Best Answer: when you turn your ignition on do you get a battery light before starting engine if not then check the exciter/indicator feed too the altenator on an astra g it should be 12v on an astra h it will be 1. If the mk3 alternator doesn't automatically turn on when revved to certain RPMs, then the problem just might be that the regulator is not being turned on by the exciter wire. This wire sometimes only shows. OK, now I know its the alternator. I was looking at the wire diagrams and it appears that the 'exciter' wire should have battery voltage when in run and start. My dash light does not work after I installed my one wire alternator. Chevy Alternator Wiring (Non-Chevy vehicle) Chevy Alternator Exciter; Premier welder alternator question. I didn't dare shut it off. Installed a Painless wiring harness and the alternator is not charging the battery. The field wire is the one closest to the positive output stud on the back of the alternator, and should be connected to a switched hot battery source (but not the lead to the distributor, otherwise the engine will not cut off with the ignition switchguess how I know that, LOL). The Subaru ECU has an “Alternator charge Cut-out Function” that is controlled by the electrical load on the vehicle, the vehicle has an alternator with a 3-pin plug (C=computer control: S=Battery sense: L=Warning Lamp). Unfortunately, the convenience that comes with this type of charging system presents a challenge for many users. I was told I can hook a wire to my battery and another to the alternator with a switch and this will be a temporary fix. Would it hurt anything to put in the exciter wire if it was meant to work without it?. The bulb limits current enough that the alternator cannot back-feed through the bulb to the ignition swotch. Recheck as per Step 02. What am I missing? Please help. It's the 1st of the month so that means it's time for another "how to" video for you DIY golfers out there. I have the green wire on the bottom pin of the coil. Unplug the two wires that connect to the generator brushes. I've checked voltage at the alternator lug with the car off and I see a 0. on the two wire plug one wire will have voltage all the time, this is the "sample" wire where the regulator reads the system voltage to adjust the output, the second wire. Remove the spark plug In general, this process should be performed after the engine has cooled. Lincoln electric SHIELD-ARC SA-250 Pdf User Manuals. The indicator light works as an exciter. BMW sensor faults and problems. 01 a second until it gets to around ten then dies. Found partial short to ground on main power wire to fuse/relay block in engine compartment. You need to think of it the other way round, ignition switch to charge light , then charge light to alternator ,it (hopefully) makes more sense then. Using LED as Alternator Light? - My car is a 1973 MGB, using a GM C130 type alternator. If the harness plug testing is OK, you may wish to replace the coil as a first step. First make sure that the vehicle's battery is fully charged. Remove the brushes and inspect them carefully if your alternator is not working well. One solution to the charging dilemma is to upgrade to a single-wire alternator that puts the power directly to the battery - and only when the engine is running. Car problem(s) with the 1998 CADILLAC DEVILLE. It was not wired with an exciter wire, so I presume it is meant to be the one wire kind. - no warning lights except seatbelt and overdrive when key is in and in position 2, car engine is not running. that was not working ,I have fixed it. If the alternator isn't putting out enough current to keep up with the electrical loads that are placed upon it, or the charging voltage is low, don't automatically assume the starter or alternator is bad and needs to be replaced (unless you're bench testing the unit out of. Go to your alternator connectors. Zener diode is a simple component to understand in a electronic components and it work Normal in your circuit diagram, the time you used it. 3 liter 2007 and later 1500 series chevy trucks The alternator is "switched" on when the ecm sends 5 volts to one of the two wires in the two wire pigtail. But I installed a new voltmeter and I cant make it show over 13 volts unless I take a jumper wire and energize it, then it shows over 14 V. For example, a 90 V dc motor will have smaller conductors and more turns per coil to raise resistance, whereas, a 12 V dc motor will have larger conductors and less turns per coil to lower resistance. So maybe it was the plug in connection so I hot hired the exciter contact so the alternator was positivily getting power to excite the regulator still no change. • B is the alternator output wire that supplies current to the battery. Very very nice machine welds excellentLocated in blessing, tx TRAILER NOT INCLUDED7500Call David at. One-wire alternators are internally MORE complex than 2/3 wire alternators and therefore less reliable. The charging system is made up of 3 components: (A) the battery, (C) alternator and (C') voltage regulator. Dave: THe 66 electrical assy manual on page E6-8601-2 shows it well. Car problem(s) with the 1998 CADILLAC DEVILLE. I think it depends on the type of wiring that the alternator is designed for. Exciter may not be operating. Repair or replace as needed. The trick is to put a wire (paper clip will work) thru a hole right in the back of the case to hold the brushes back when you assemble. Also at the panel, the phase indication light for red is not working. If they are long (as shown in the photo), you probably have some other internal problem with the alternator that's causing it to malfunction. my z origionally had a 3 wire alternator and i have since swiched to a 1 wire. Working principle of a generator alternator Electric generators and generator alternators follow the Fleming’s Right Hand Rule. Your alternator might be able to internally excite up to a certain. I'll get the car on the lift hopefully this weekend and check that line for continuity. Initially, alternator failure may not cause any symptoms since a vehicle’s battery has some reserve power, but eventually, the reserves are depleted and accessories like the radio and air conditioning will stop working. my battery is not charging, i replaced both the battery and alternator with brand new replacements, still my battery is drained while engine is on, i checked my ground, it is good, i've replaced my terminals, checked my fuses and tested the engine on without the. This has got to be a textbook problem but I've searched a ton of threads and don't see my problem described exactly anywhere. This complete automobile wiring system has been designed with three major groups incorporated into it: ENGINE/HEADLIGHT GROUP Includes high beam, low beam, park, right turn, left turn, electric fan, horn, starter solenoid and battery feed, alternator and alternator exciter wire, distributor, water temperature, oil pressure, and air conditioning. My question is I have read that you can put a resistor in line to bypass the light bulb but no one has mentioned what ohm resistor to instal. Only exception was my alternator idiot light. There are no existing wires run to the two voltage regulator terminals on the alternator. Friction tape is not intended for electrical work. If you have a multimeter like this one, you can connect it to the battery terminals to get a voltage reading. The alternator quits charging when the engine stopsand will need to be excited again on restart. The #1 plug wire (white) is the exciter circuit and needs switched 12v. D Fast-Responset II brushless alternator with brushless exciter for excellent load response. The bulb limits current enough that the alternator cannot back-feed through the bulb to the ignition swotch. If not, you have a wiring problem upstream the connection to the cluster or the cluster itself. It would be nice to put all of the alternator and CDI wires together in one bundle if possible. If the exciter circuit is open, the alternator will not get the initial excitation current through the ignition switch needed to start charging. 1 Schematic Wiring Diagram 359343-J Section 10 Wiring Diagrams and Voltage Reconnection TP-5986 4/03. • B is the alternator output wire that supplies current to the battery. My truck is the 2500. Without a resistance wire, the engine will keep running after the key is off due to feedback thru the (#1) exciter wire and thru a common splice with the coil. This has got to be a textbook problem but I've searched a ton of threads and don't see my problem described exactly anywhere. Prior to deadlining the alternator, I would question your voltage measuring and the idiot light. Some other tidbits available from AC Delco for wiring up a 10SI, is wiring package 1870921 (for those 6 to 12volt conversions). I'm thinking that the alternator needs that exciter wire to "get it going". Removed the alternator exciter wire. I think what's happened is the exciter wire has snapped somewhere further back and they have used the fudge to give it a 12v signal. Would it hurt anything to put in the exciter wire if it was meant to work without it?. Post by lummert » 19 Nov 2014, 17:51 I had a bad main head light relay that caused the overdrive light to come on, head lights not come on, and intermittent stalling that was cured by replacing the relay. As for using a battery charger, I see no reason why you couldn't do it, but you might want to stick a low amperage fuse (2A-5A?) in line with one side to prevent possible damage to. 92 crown vic - temperature guage on the dash is not working. For test purposes you can jump power to the inner small wire connection and force the alternator to charge which it will continue to do till the engine is shut off if it is in good condition. Understanding the Alternator • Four wires connect the alternator to the rest of the charging system. Each section has caution and warning messages. Since battery warning light is not working will that keep alternator from charging. An electrical generator (or a magneto) is the reverse of an electromagnet (see How Electromagnets Work for details). Remove wire from board terminal 12 (Leave disconnected for test)! Verify oil pressure switch and wire operation (not shorted to ground). Battery Isolator with Exciter Wire-gctid393864 this should work for you. They are internally regulated and grounded through the block. - no warning lights except seatbelt and overdrive when key is in and in position 2, car engine is not running. If the exciter circuit is open, the alternator will not get the initial excitation current through the ignition switch needed to start charging. Simple fix, or test with a light tester. I tried to make the correct method a little more concise and clear. One-wire alternators are internally MORE complex than 2/3 wire alternators and therefore less reliable. The new alternator has "BATT", ground, a plug labelled "S" and "I", and a "P" terminal. net! We are delighted you have found your way to the best Jet Boaters Forum on the internet! Please consider Signing Up so that you can enjoy all the features and offers on the forum. The wire harness connectors (Deutsch) are keyed to insure correct orientation when reattached to the control modules. may be loose or missing. If your alternator stops generating current when the ignition is on and the engine is running, you back to the first scenario. My truck is the 2500. About Trailer Wiring Harness 2001 Toyota Tundra Are you trying to find Trailer Wiring Harness 2001 Toyota Tundra? Then you definitely come right place to get the Trailer Wiring Ha. Machine Engine Alternator Spark Plug PluPr Gap CDIBox Fly-Model Model Wattage MM/ nches Identification wheel NGK Champion Number ID # Indy Lite Models EC34-2PM02/E02 150 BABES AN-3C 0. This car has been completely re-wired and doesn't use much of the stock wiring anymore. AMP 3G single-wire internally regulated alternator from Performance Distributors is an easy drop-in replacement for your 1G charger. 5 DCI does please? (the one connected to the small multi-plug on top of the alternator). It will be energized when the alternator is working normally. I will check first for a ground and maybe connect the negative wire to the battery. I guess the parking brake light is somehow connected to the alternator? and it makes sense not to have the running lights on if your alternator isn't working. My question is I have read that you can put a resistor in line to bypass the light bulb but no one has mentioned what ohm resistor to instal. Check the fan belt is not slipping 2. battery feed, alternator and alternator exciter wire, distributor, water temperature, oil pressure and air conditioning. Hopefully no sparks! If no ready-made connector to hand, connect the larger terminal of the alternator/rectifier to the positive of the battery (B+). Prior to deadlining the alternator, I would question your voltage measuring and the idiot light. The exciter circuit was clearly not working if the alt was not charging *at idle* but then produced good voltage with the engine at 2500 rpm. Would it hurt anything to put in the exciter wire if it was meant to work without it?. Verify operation of remote control panel and that wires are not shorted to ground. If he has the original Alternator then your pic Mick is no good, that Alt is from VN onwards (BXH or BXU series), principal of operation is the same, his Alt needs the wire from the charge Lamp in the dash pluged into the rear (not the side) of the Alt, I think there is only one place it can go. Between the both of us we have about 5 used voltage regulators and even with the rebuilt alternator and swapping out the voltage regulators it is still charging with 12. These messages are for your safety and the safety of the equipment involved. You need to think of it the other way round, ignition switch to charge light , then charge light to alternator ,it (hopefully) makes more sense then. Brown is "regulator exciter voltage" which probably means "on and off". Tuff Stuff has dedicated charge wires that are large enough to carry the amperes, and have high-quality, crimped-on brass connectors. After messing with this for a while and tracing all the lines and. The painless instructions has an exciter wire that hooks into the regulator. So, I keep my old alternator (its one I had specially built years ago) go buy a reman alternator, install it and everything starts working great. A jumper wire is supplied to connect the alternator (S) terminal to the (B+) terminal. This wire is telling the alternator the system volts- ie the voltage sensor i think. When the ignition is turned on and the alternator isn't running then there should be ground potential on the wire through the alternator circuit. im not sure if the failed battery took out the alternator or visa-versa. If a wire is not attached properly, becomes detached or is inadvertently cut, the alternator will not have any power. After replacing the tires, the four wheel drive would not work. A one-wire alternator doesn’t use the two-wire connector which supplies electrical current to facilitate use of the idiot light. If you hook the exciter wire to your ignition, it will work, but when you go to turn the engine off, the alt will "backfeed" power to the coil and the engine will keep running. One thing you could do is compare your working alternator to the dead one. I have not got around to replacing the ammeter with a voltmeter. I would start by checking the wires on the starter motor and alternator to make sure they are sound then remove the no-charge wire off the alternator and putting a wire from that to the battery with a 100ohm resistor inline, then start the car and test the voltage across the alternator output. Yamaha CT1 175 Electrical Wiring Diagram Schematic 1969 1970 1971 HERE. That is 40 years without give or take. Exciter coils create the auxillary power for the SA200. The contacts inside that red box are all clean and the original jump wire from the alternator has continuity so i have no idea why it wont work hooked up that way. This complete automobile wiring system has been designed with three major groups incorporated into it: ENGINE/HEADLIGHT GROUP Includes high beam, low beam, park, right turn, left turn, electric fan, horn, starter solenoid and battery feed, alternator and alternator exciter wire, distributor, water temperature, oil pressure, and air conditioning. 2005 Volkswagen Passat Electrical Problems. The blue "exciter wire shows the same voltage as the battery on a cold start. An OBDII meter can tell if your charging circuit is working. 3 liter 2007 and later 1500 series chevy trucks The alternator is "switched" on when the ecm sends 5 volts to one of the two wires in the two wire pigtail. When the alternator is working, it generates voltage on that lead, the current through the lamp stops and the light goes out until there is a problem with the charging circuit which will turn on the. Since there's your time and cost involved with a stator replacement, if you have not checked *at the CDI* verify the Black/White wire is not grounded when testing for a spark. Thanks for the replies so far guys. This instructable will outline the steps I took. If the alternator has good power on the large red wire and does not charge when excited by jumping the exciter terminal with 12V with the engine running. And another thing. exciter excitation - Dutch translation – Linguee Look up in Linguee. Good pointer from post re 12V battery on field to test output of machine expect field sx avr wiring diagram from 2 to 5 Amp. Three wire operation is as your vehicle’s original manufacture intended and assures that the alternator is switched on anytime the engine is running. I have x2 connectors to my alternator: 1. Troubleshooting Outboard Motor Magneto Ignitions Fluke Corporation 3 Measure the contact resistance as follows: place the multimeter in the Ω function and hold the probe tips tightly together to obtain a reference reading with the tips shorted. When the exciter wire is plugged in and working fine the volts are 7. One day with the cold snap there was not enough power to start. Battery to Frame horn, then frame to engine/tranny. Welder starts but fails to generate. (If the cover has been fitted you will just see a black plastic clip on cover). I now have a wire running from a switched fuse (forget which one, but I could look), through a diode to the exciter terminal. Is the exciter wire red/black wire? Where should the exciter wire plug into the back of the alternator? Should the exciter wire measure 12V with the engine in he 'ON' position? Will grounding the exciter wire turn the dash bulb on? (to test for harness integrity) What route does the exciter wire take to front fuse panel?. The alternator does put out so obviously the exciter wire is not needed, but would it prevent having to rev. all idiot lights on dash lit up. This is a simple indicator. It does not have voltage 1 Volt. 02B CUa41a FP544a. Nevi-P If the alternator is not charging then it is not working. Why is my charging system is not working? How can I fix it? 26 Answers. How I fixed my no charging problem on my 1991 Volvo 740 after changing alternator 3 times and a brand new battery (which didn't fix the problem). but its all there from what i could see. Anyway back on the diag work. Repair or replace as needed. Do not install AVR at place with high vibration to prevent loosen connection. It is a true 3600w amp(DD Audio) but I am not pulling the full 300 amps. Plug in a light, turn on the generator breaker or switch and start the motor. Presenting Alternator 44phn in stock and ready for shipping today!. Cycle Electric sells wholesale only, so those of you who would be interested in ordering should catch me at my booth (W-02) or bug your local dealer to contact them directly. While the alternator appears to be generating power, it isn't getting to the battery. That should only happen when the alternator isn't producing any power, as the alt will feed power back up the wire causing the light to turn out if it is working properly. Take it back to my alternator guy and tell him what happened. With this setup the alternator starts charging as soon as the engine is running. If you hook the exciter wire to your ignition, it will work, but when you go to turn the engine off, the alt will "backfeed" power to the coil and the engine will keep running. Took alternator to a rebuilder who said it was fine but was not getting exciter. Rewire your existing kill-switch to the Module PURPLE wire. That is 40 years without give or take. 1 wire it seems that it is working like it should be. NOTE: some alternators back-feed power through the alternator and out the exciter wire. If it is the problem, then it saved you a lot of work and time. 4 with engine running. I have a new relay in under the dash, was done with the dog head upgrade. The issue: Doug Tompsett found some information on it, basically it boils down to the 'exciter wire' not doing it's job. This was only spotted when I removed the covers underneath trying to locate a problem with the alternator not charging and a long cranking time before the engine would fire up I decided to investigate. The other end of the alternator light is connected to an ignition positive. Voltage regulators are commonly found in vehicles and other electronic equipment. Best Answer: when you turn your ignition on do you get a battery light before starting engine if not then check the exciter/indicator feed too the altenator on an astra g it should be 12v on an astra h it will be 1. I'm thinking that the alternator needs that exciter wire to "get it going". Sounds as if the wire that is intended to excite the alternator has an open & isn't providing electricity to regulator when ign switch is turned on. When the motor is running the alternator output is only 11. Re: 1992 940GL Alternator Exciter wire no voltage. In general, if the charging system is working normally, the warning light should glow when the ignition is switched on and then extinguish when the engine is started. That is 40 years without give or take. (I assume this mean that voltage for red phase is not available). wiring info for the speedfight, trekker, vivacity General information All models have a 12-volt electrical system charged by a three-phase alternator with a separate regulator/rectifier. I'm guessing that there's something wrong with the exciter wire connection. a) Could it be the climate control causing this overload and melted the wire?. It's the 1st of the month so that means it's time for another "how to" video for you DIY golfers out there. Refer to Fig 1 for proper wiring. The usual alternator failures have to do with worn brushes inside the alternator, or a broken field wire between the regulator and alternator. The I terminal of the switch also goes to the coil, so it has to go off when the key is turned off. 99E-A01 Model: E36 – BMW 323i and BMW 328i with M52 engine produced June 1995 - December 1998 E36-BMW M3 with S52 engine produced January 1996 – December 1998 E39-BMW 528i with M52 engine produced March 1996 –August 1998. The electrical system on a moped is the most mysterious and crucial set of components on a bike. Posted By: PapPappy on 06/21/11 08:32am I agree with Moutainair, it it was working all that time, it had to be wired properly. Initially, alternator failure may not cause any symptoms since a vehicle’s battery has some reserve power, but eventually, the reserves are depleted and accessories like the radio and air conditioning will stop working. Hi, new to forum, needing some info with my old 2001 petrol scenic Alternator warning light inop, checked alternator with meter, not charging, suspected broken (exciter)wire going into back of alternator, gave small wire battery feed and alt now putting out around 14. Re: 1992 940GL Alternator Exciter wire no voltage. Once the alternator's output equals the battery's voltage, the warning light goes out, indicating that the alternator is now charging the battery (volt gauge jumps from 12 to 13-14. The battery wire was. The trick is to put a wire (paper clip will work) thru a hole right in the back of the case to hold the brushes back when you assemble. The original alternator no charge light works by a voltage difference between a separate alternator terminal & 12v at the battery. The DC generator generates a small amount of electricity just enough to excite the field coils of the connected alternator to generate electricity. Nevi-P If the alternator is not charging then it is not working. The red wire (with the ring terminal) attaches to the same (10/32) stud on the back of the alternator that you attached the (BATT) wire too. The solenoid on most newer tractors is on the starter. For a turn on lead I put a wire under the fuse for the heated seats which is in the rear fuse panel, they go on and off with the ignition. 01 a second until it gets to around ten then dies. Under normal operation (like, when your car was new) the blue exciter wire off the alternator normally goes through the alternator bulb in the instrument cluster. I am running a one wire alternator. First is to send power with the ignition on and once it is all running, if there is a fault, the voltage regulator will ground the wire as it does when the alternator is not turning to indicate a problem. Pointing out the Powermaster early-style Delco alternators will work as a one-wire or OEM-style alternator, the team clearly stated the difference. Inside an alternator the belt-driven rotor becomes an electromagnet when current is fed to it. Electricity moving through a wire creates a circular magnetic field with the wire as the source and center of the rotation. So, I keep my old alternator (its one I had specially built years ago) go buy a reman alternator, install it and everything starts working great. I like to see what the alternator is actually doing, not just voltage. Like Howard mentioned about the voltmeter, maybe the exciter should be at the IGN terminal. This causes the alternator or generator to charge at full output when rotated. If not, check the wiring to the start solenoid. Have a look at his website, has wiring diagrams for Cubs to 450's. About Trailer Wiring Harness 2001 Toyota Tundra Are you trying to find Trailer Wiring Harness 2001 Toyota Tundra? Then you definitely come right place to get the Trailer Wiring Ha. The other wire is for the exciter that comes from the battery warning light. I believe if you don't connect this wire correctly it will not charge the system. alternator will not charge a dead battery because alternators take current to excite the field coil to make everything work. Thanks everyone for this information. Volkswagen Jetta Difficult to Diagnose Electrical Issues Are Typically Due to Ground Issues - 195 reports. That said, I understand what you mean and you are right. i have read all kinds of posts and seen many diagrams on the internet, my question is do i really not need the factory plug? from what i have read they say to hook up the alternator and just tuck the plug away, but dont those wires need to be hooked up? and if so can the plug be cut off and the wires put where they. The indicator circuit can be open and the alternator can still function fully. I recently bought my e28 with a cheap USA Industries alternator already installed, which would not charge my battery. Now snap the DA Plug, into the top of the alternator. Was only getting 11. - alternator works on a cold start , charging at 13. It was not wired with an exciter wire, so I presume it is meant to be the one wire kind. Specifically check the Blue Exciter wire behind the alternator. Why is my charging system is not working? How can I fix it? 26 Answers. Use of such equipment could damage the AVR. After replacing the tires, the four wheel drive would not work. In addition, it is possible to vibrate paving stones an concrete blocks by using extension plates up to 86 cm (accessories). The battery is what keeps the voltage near ~14V. A voltage regulator will limit the maximum amount of voltage from a power source and prevents a device or alternator from. See real-world Audi A8 / S8 electrical problems and repair histories as reported by other Audi A8 / S8 owners. “WHERE DO I PUT THE 3rd WIRE ON MY 1-WIRE ALTERNATOR?!” “Where do I put the third wire on my one-wire alternator?!” Certainly a valid question, and a common source of charging system confusion. Among all the Ford alternator wiring diagrams above, this is the most complicated one. Battery to Frame horn, then frame to engine/tranny. Lincoln electric SHIELD-ARC SA-250 Pdf User Manuals. If not, check for breaks in the harness, or loose connections. So it means the D+ going to the alt through pin 22 at C2 connector (according to the wiring diagram) is just coming from the alt warning light?. Alternator not charging, exciter wire question The alternator has tested fine and the bulb has been swapped out with a know good bulb ,so, that leaves the wiring at the blue wire. I didn't dare shut it off. Photo 1: This 10. If the engine is not properly grounded and the alternator is grounded to the engine, it will not work properly and can also be a factor in alternator failure. The 'L' lead is the lamp lead that normally ties to the w/r wire which is connected in series with the battery warning light and then to switched ignition power (the ignition switch). When you turn the ignition switch off you cut power to the coil. - we have tracked this problem down to no voltage coming from the exciter wire that plugs into the alternator. post where the the battery charging wire goes because that was my best guess. Ive done a search and got some results but its not all clear. It does not have voltage 1 Volt. 5 amps that I was getting, has dropped back down to 0-10ma. I'm guessing that there's something wrong with the exciter wire connection.