Rear side markers don't work
 

My camaro's rear side markers don't light up no matter what. I checked the bulbs and they are good and working. Out of the wiring that I can see, i don't see any shorts or anything. All my other lighting works well.

What can I do to fix this?

have you tested the wires with a light tester or voltmeter

There is no voltage to the wires, What comes next?

i would check where they're grounded next

check for bad grounds

Any specific places to look?

im guessing the ground for the side markers is going to be in with the wiring harness for the taillights