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

4th gen headlight switch/Cluster

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Old Feb 5, 2013 | 02:17 PM
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JacobIroc's Avatar
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Joined: Jan 2012
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From: Salem, OR
Car: 92 RS 25th Anniversary
Engine: 305 TBI -> 305 TPI
Transmission: T5/T56
Axle/Gears: 3.08 - 3.73+ soon
4th gen headlight switch/Cluster

Alright, so I finally started my dash swap and I've come pretty far, but hit a huge roadblock >:|....

With the cluster wired to grey -> grey I get the digital ODO displaying, but no other dash lights. Now if I turn the dimmer all the way on, I lose my ODO display but gain the other dash lights -.-... I can turn the headlights on and lose nothing.

With the cluster wired to pink/black -> grey I get super bright everything but ODO.

With both these I always have ODO backlight.

If I connect brown (ODO display) to anything with power, the ODO backlight disappears..

I'm positive I have the cluster wired correctly. The only thing on the headlight switch that isn't wired is the GREY wire on the headlight switch (not dimmer). I haven't seen a difference in anything with it hooked and not hooked up. Everything on the headlight switch is color matched.

What do you guys think my problem could be? Bad random ground? Thanks.

Also. I'm using a signal generator and SGI-5 to give me a 4k PPM.. I know this needs to be wired to the ECM.. Which wire goes from the cluster area to ECM?

Last edited by JacobIroc; Feb 5, 2013 at 02:21 PM.
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