Every light working in dash besides illumination back light for gauges climate control lights work dimmer switch works

 

Look for a break in the red/black wire between the dimmer switch and the back of the gauge cluster.

 

1) Buy a multimeter if you don't have one.

2) Unplug the cluster connectors.

3) Check whether all Red/Blk wires (there are multiple) from fuse 19 have battery voltage with the parking lights turned on.

4) If the Red/Blk wires have battery voltage, test whether the Red wires (there are multiple) that run to the dimmer switch have good ground.

The tests above will pinpoint the problem.

 

i replaced my actual turn signal switch and that fixed that issue for me when that happened to me