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GVR4 cluster illumination lights do not work. HVAC lights do.

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yubh8tn

Probationary Member
19
12
Jul 27, 2021
coeur d alene, Idaho
Hello. I'm confused about this and looking for answers. ALL lights work except for the switchable green and orange lights. I swapped in two other clusters, same problem. Gotta be car side. I studied the wiring diagrams, but they're a bit hard to read. It appears that the boost "gauge" lights are powered by the same pin (pin 11 and 10) as the G/O lights, but the boost gauge lights work whilst the G/O lights do not. Can anyone provide any insight or guidance?


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my first start would be checking for 12v at the switch with a volt meter or power probe.
Do you mean the switch on the column to go between lights off, running, and headlights on? If so, when I rotate that switch, everything works except for the G/O lights. If not, which switch do you mean?
 
connector c52 pin 11 for power to the color change switch.

I believe the color change switch is bad but you need to verify first that it is getting voltage and should be working
I will do that soon, hopefully tomorrow. It did this with 2 other gauges, too, though. So I think the issue is car-side. Shouldn't be the switch unless all 3 are bad.
 
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