Dash light help

[hiboti]

ok everyone im new here and I need your help.

 

I have a 2006 chevy 2500hd and im at a loss to what to look at next. all the lights on my dash and insturment cluster work exept the back lights for the gauges. I have tested ALL the fuses and there good. I replaced the headlight switch and fog light switch and even replaced the insturment cluster still nothing. please help.

[davester]

If you've replaced the instrument panel itself and the gauge lights still don't work, and all the other lights on the dash respond to the brightness dial, then it's likely a wiring and/or connector issue for the I.P.

[O_J_Simpson]

Meter the dimmer switch output and report back.

[ericwudi0830]

Try rewiring the instrument panel