Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

Guage and wire question.

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Old May 2, 2004 | 11:08 AM
  #1  
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From: South Carolina
Car: 1989 IROCZ
Engine: Rebuilt 350 TPI
Transmission: 700r4
Guage and wire question.

2 Different questions really, ill start with my guages. My middle 3 guages havent worked since I got the car, the fuel, temp and voltmeter. I replaced the printed circuit on the back with 2 different circuits and none of the guages still work. I have the Haynes schematics and I can read schematics very well, but likeining them to where the wires are inside the car is greek to me. I can only figure its maybe? a wiring problem? I got under and looked around and found a few plugs I need now. 2 I know what they are, bright light plug and fog light plug, but one has left me baffled, I dont know how to put a picture in my post, so I put them on page 3 of my cardomain website, any help would be greatly apreciated! Thanks.

http://camaroz28.cardomain.com/id/89irocztpi
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Old May 2, 2004 | 11:33 AM
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From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
Hello 89IROCZTPI,

Which wiring diagram would you like for your car. Yes, the wiring schematics in the haynes and chilton manuals do leave a lot to be desired.
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Old May 2, 2004 | 12:15 PM
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From: South Carolina
Car: 1989 IROCZ
Engine: Rebuilt 350 TPI
Transmission: 700r4
Dont know if you looked at my cardomain site, but I was trying to figure out where the green wire went in the 1st picture, as it was torn out of the plug. Basically im trying to find a spot to start troubleshooting why my middle 3 gauges still arent working. Thanks again!
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Old May 2, 2004 | 12:26 PM
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From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
Look inside the connector for a pin that doesn't have a wire to it. Usually there won't be a pin in a slot that doesn't have a wire. Also look at the other half of that connector and see what pin the green wire goes to and match them up.
Attached Thumbnails Guage and wire question.-555233_13a_full.gif  
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Old May 2, 2004 | 12:27 PM
  #5  
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From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
second pic.
Attached Thumbnails Guage and wire question.-555233_14a_full.gif  
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Old May 2, 2004 | 05:09 PM
  #6  
89IROCZTPI's Avatar
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From: South Carolina
Car: 1989 IROCZ
Engine: Rebuilt 350 TPI
Transmission: 700r4
Ill recheck the plug again, but I want to say it went green-green. I just have no idea what the plug/wires really do. They apparently have nothing to do with my non-working guages as I had the plug unplugged and drove down the road just fine. It might be a bit before I can check the plug though, as it wont quit raining
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Old May 2, 2004 | 06:09 PM
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From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
I went out to my car and did a quick check of that connector. There are five wires in it. They are black, green, tan, blue/white, and blue/black. The colors all match on the two parts of the connector. I will get back to you on their function shortly.

Last edited by Trickster; May 2, 2004 at 06:31 PM.
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Old May 2, 2004 | 06:34 PM
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From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
Okay 89IROCZTPI,

I just went back out to my car and verified what I had a suspicion about. Those wires go to the cruise control unit in the engine compartment at the left side of the radiator.
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Old May 2, 2004 | 08:04 PM
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From: South Carolina
Car: 1989 IROCZ
Engine: Rebuilt 350 TPI
Transmission: 700r4
I knew my cruise didnt work, now I know why!! Thanks a ton Trickster! Now if I can just figure out whats with the guages ill be all set electronically.
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