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Old 08-29-2015, 02:13 AM   #1
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Cluster not illuminating

My gauge cluster and climate control are not lighting up with the headlights. A couple days ago, my battery connection came loose and after tightening it back on, the gauges would not light up; that may just be a coincidence I don't know. I've checked every fuse. I've swapped gauge clusters also just to see if maybe the bulbs were burnt out. I also swapped out headlight switches. The headlights, turn signals, brake lights, tail lights, everything else works. What else could it be?
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Old 08-29-2015, 06:59 AM   #2
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Just asking did you make sure you turned the light switch to the left

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Old 08-29-2015, 10:57 AM   #3
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I tried the knob to the left and right. Apparently I overlooked a fuse, I found one that was blown, #37. I replaced it with a 20 amp to see what it'd do and it instantly blew. I believe it blew due to a bad ground on the reverse glow gauges. After fixing it, I tried again and the fuse didn't blow but the headlight switch started smoking. These are the 99-04 gt reverse glow gauges from American muscle. I went by the comments and cut the dimmer switch off and connected the black and red to each other. Then I connected the red from the inverter to the blue with a white stripe. And the black to a chassis ground behind the gauges. What would make the switch smoke like that?
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Old 08-29-2015, 12:17 PM   #4
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Better double check those connections or the overlays may be bad and causing an overload

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Old 08-29-2015, 04:19 PM   #5
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Its not the reverse glow gauges causing the problem. After taking them off and taking out the wiring it still doesn't work. Does that just leave the headlight switch wiring harness that could be the culprit? I don't know what else it could be

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Old 08-29-2015, 04:38 PM   #6
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Well since you said it smoked then I would defiantly look there

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Old 08-29-2015, 05:57 PM   #7
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The smoking was from a wire being connected to the wrong place. I have gotten the wiring straight. The ground is good. Fuses aren't blowing anymore. But my gauges still won't light up. I feel like a wire being shorted out is probably the problem. I can run a jump off from like the fog lights or something to the cluster if I need to but I don't know what wires from the cluster harness relate to illumination, or if that is even the problem

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Old 08-30-2015, 04:10 PM   #8
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I checked all of the pins on the harness and headlight switch; all of them had power that should. Does that mean the circuit board in the cluster may be burnt up? I don't know why it would just affect illumination if that's the case though. If so, I have another gauge cluster that I can swap boards out of, I know the cluster is programmed to the car, but is it the whole board or the odometer reading chip?
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Old 08-30-2015, 04:12 PM   #9
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Have you checked the bulbs

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Old 08-30-2015, 04:25 PM   #10
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After reading this whole thread... Sadly I don't think anybody can help you through the internets... With out actually looking at what was done we are just guessing bro sorry


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Old 08-30-2015, 04:45 PM   #11
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The Autometer gauges I swapped from doesn't use bulbs like the stock one so that rules out the bulbs.

I have tried:
- swapping gauge clusters (Autometer to stock)
- checking bulbs
- checking all pins from the headlight switch harness and the 2 gauge cluster harnesses
- swapping headlight switches
- unplugged the radio
- checked all fuses
- I took off the reverse glow gauges on the stock cluster to see if that was the problem

There is no smoking or blowing of fuses anymore (that was from the reverse glow gauges being hooked up wrong). The only one thing not working is the gauge cluster illumination.
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Old 09-10-2015, 06:17 PM   #12
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So the gauges are still not lighting up. I swapped all relays also to see if it would work. It also is blowing fuse 37 again. But only when I turn the dimmer all the way to the left, right before it clicks to make the dome light come on. All the way to the right doesn't blow it. And most of the way left doesn't blow it. Just as soon as it touches the "ledge" it blows the fuse. Any suggestions?

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Old 09-12-2015, 08:57 PM   #13
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So apparently my dimmer wire was dead. I ran a wire from the red/yellow wire on the headlight switch to the blue/red wire of the gauge cluster harness. Everything works fine now. Even the climate control

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