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

Interesting wiring issue

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Old Apr 17, 2008 | 12:29 AM
  #1  
IROCZ28KevinZ's Avatar
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From: Sedalia, MO
Car: 1991 Z28 convertible
Engine: 305 TPI
Transmission: TH-700R4
Axle/Gears: 3.73 posi 4th gen 10-bolt
Interesting wiring issue

I have this over in car audio, but figured maybe it'd also help if i posted it here.

I have a 1987 Trans Am GTA w/o steering wheel controls. Couple days ago, I lucked out at a j/y and found one of the late-80s/early-90s Pontiac CD Players that actually works. The radio has the 21-pin style connector out back, while my car had the 3 big connectors from the factory. I cut those off and spliced the 21 pin in its place. The radio works fine, but I'm having a couple issues.

-First, when you turn the key to ACC and turn the radio ON, the lights in the car come on kinda dim. I hear what sounds like a relay clicking behind the dash on the pass. side. I smelled something that smelled like electronics burning, so I unplugged the radio. Thankfully, nothing was damaged.

-Second, if I fool around with the dimmer switch, I get a little static in the left front speaker.

Anyone have any ideas what could be causing this? I matched up the coloring on the wires pretty good, but I'm looking over everything. I don't have a wiring diagram for the factory wiring, but I do have a diagram for the 21 pin out of my 91 Camaro manual. I figured they must be the same as the Firebird. I did hook up a pink wire on the connector to a pink wire in the car, but the 91 diagram says it isn't used. I unplugged it but it didn't help.

Thanks for any advice you can give me!


Kevin
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Old Apr 19, 2008 | 09:20 PM
  #2  
Irock87's Avatar
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Joined: Mar 2008
Posts: 8
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From: Champaign Il
Car: 87 irocz
Engine: 355 tpi
Transmission: 700r4
Axle/Gears: 373
Re: Interesting wiring issue

If I were you i would just chill out with the radio thing you could end up catching something on FIRE! if your smelling something then that can't be good and you say that it making static sounds hooking up a radio us easy as a kind matching colors and it is but in your situation is different i had to get a aftermarket radio adaptor i have a bose stereo in my 87 Iroc and have a cd/dvd flip out and i tried it the way you did and i had the same problem until i got the adaptor so i suggest that you look into one check your local car stereo place or walmart i know you got a walmrt somewere around there everyone does good luck
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