Dome Lights Out

I could've sworn they were working before I bought the truck. Now they don't work...nor do the lights in the bay doors on the side of the truck. But the personal reading lights in the sleeper are working...top and bottom. Anyone know where the fuses for this thing are located?

 

Okay, found and replaced the fuse...not the problem. Found and replaced the relay with the W/W delay relay...not the problem. Is there a switch somewhere in the truck I'm not aware of? Is there a connector somewhere that could've come loose? Any help is certainly appreciated.

 

misterG, yes, bulbs are there and they look brand new.

PrairieBoy, it's an 05 VNL 670.

 

misterG, sorry...I was sorely mistaken. Every one of the dome bulbs was blown. I got out my handy old test lite and voila...plenty of power in those circuits.