04 gto alternator wiring question
Thread Starter
Launching!
Joined: Dec 2005
Posts: 213
Likes: 2
04 gto alternator wiring question almost finished dropping gto motor in my 71 monte. the alt has a main power lead and a 2 wire plug which has a white and brown. the white lead runs back into battery + with the main red, but is the brown wire(which originally went into body harness) a dash volt lite for low voltage????????
Joined: Sep 2004
Posts: 3,148
Likes: 12
From: Downers Grove, IL
What terminals are the wires coming from?
Does this thread help?
https://ls1tech.com/forums/showthrea...ght=alternator
Does this thread help?
https://ls1tech.com/forums/showthrea...ght=alternator
Thread Starter
Launching!
Joined: Dec 2005
Posts: 213
Likes: 2
there are only 2 wires on this plug. not 3 or 4 like the f-body style alt. I am using the factory GTO battery/starter/alternator body harness. pretty self contained. power jumps from batt+ to starter to alt lugnut.very simple. the 2 wire alt. plug has the white which ends back up to batt+, and the brown, which ends up to a plug that goes back into the original body harness along with the starter purple lead from starter.
Joined: Sep 2004
Posts: 3,148
Likes: 12
From: Downers Grove, IL
The f-body alt only has 1 wire on it. some trucks and vettes have 2 wires. Sounds like your alt is the vette style. So yes the brown wire would go to a + source through a resistance load. You can either wire it to an IGN+ source through a 194 style light bulb if you want an idiot light, or wire it to an IGN+ source through a 470ohm 1/2 watt resistor.
Thread Starter
Launching!
Joined: Dec 2005
Posts: 213
Likes: 2
bad news. the car FINALLY runs, but alternator isnt charging. could anybody out there confirm i did correct wiring? it has a two wire plug with a white and brown wire and a + battery lug. Straight from the donor car, the white jumped to the main power wire going to + lug. The brown went into the Body Harness. Right now it is not jumped to anything.Anybody have Alldata out there to send me a schematic on this?????????? ran perfect in donor car. thanx
Trending Topics
Joined: Sep 2004
Posts: 3,148
Likes: 12
From: Downers Grove, IL
If the brown wire is not connected to anything that is most likely the problem. It needs to be connected to a resistance source and then IGN + 12 V. Connect that wire to a 470 ohm 1/2 watt resistor and then connect the resistor to an IGN+ wire. You can also use a 194 style lightbulb if you want a charge indicator light.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Bumping this old thread up as I'm having a slightly different issue using the 470 ohm 1/2 watt resister to ING+.
Whenever I plug the alternator plug in, I' get a 4 amp draw with the car sitting and the key out of the ignition. So my battery ends up dying with the alternator connected.
Any suggestions.
Thanks,
Frank
Whenever I plug the alternator plug in, I' get a 4 amp draw with the car sitting and the key out of the ignition. So my battery ends up dying with the alternator connected.
Any suggestions.
Thanks,
Frank
The answer to this question might help me. Is the white wire in the top or bottom coming out of the plug when the alternator is mounted?
The plug I'm using was from my conversion car so the wires coming out were two totally different colors.
Thanks,
Frank
The plug I'm using was from my conversion car so the wires coming out were two totally different colors.
Thanks,
Frank
I have no idea what that picture is. Looks nothing like the connector on the alternator, and there are no labels for the numbers.
Choices are:
1) White wire on top, brown wire on the bottom
2) Brown wire on top, white wire on the bottom
when looking at the plug with the alternator installed in the car.
Frank
Choices are:
1) White wire on top, brown wire on the bottom
2) Brown wire on top, white wire on the bottom
when looking at the plug with the alternator installed in the car.
Frank
Staging Lane
Joined: Oct 2006
Posts: 62
Likes: 0
This should help on both issues guys,
http://www.v8rx7forum.com/v8-rx7-non...ernatives.html
http://www.v8rx7forum.com/v8-rx7-non...ernatives.html
Frank
Thread Starter
Launching!
Joined: Dec 2005
Posts: 213
Likes: 2
if you have the same 2-wire plug as me(from a GTO harness), the brown is closest to the main BAT+ lug. white is furthest from it.White is basically jumped to that main red BAT+, and my brown runs thru a marker light pigtail to IGN+ which only has power with key on/running....
Teching In
Joined: Nov 2009
Posts: 29
Likes: 0
We are having a similar issue with an 04 GTO alternator harness going into a swap car. We are going to try and use the 470 ohm resistor.
can we eliminate the body harness plug and put the resistor between the purple and brown wires? Is that what is suggested above, or do we need to keep the body harness plug in tact?
EDIT: put the resistor in line, eliminating the plug, and everything worked out gravy.
can we eliminate the body harness plug and put the resistor between the purple and brown wires? Is that what is suggested above, or do we need to keep the body harness plug in tact?
EDIT: put the resistor in line, eliminating the plug, and everything worked out gravy.
Last edited by Blip Bavarian; Sep 23, 2010 at 11:15 PM.