cluster illumination lights do not work. HVAC lights do.

[yubh8tn]

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?

 

[gvr4ever]

Do the tail lights work? 15ish years ago I picked a bad ground for my stereo and blew fuses for the dash and tail lights.

 

[yubh8tn]

Do the tail lights work? 15ish years ago I picked a bad ground for my stereo and blew fuses for the dash and tail lights.

Yes they do. I was actually wrong, not ALL lights work except for the G/O's. The left and right HVAC dial backlights don't work, but the center does. I can test power to pin 11 soon.

 

[iceman69510]

I'm not sure how that boost light works, but it appears it has power supplied from two sources, pin 11 (fuse 2) and pin 8 (fuse 9?). So I think you need to be checking the voltage at the fuse, past the junction block and then at pin 11. Also verify the ground through the rheostat is good.