2011 T660 Bunk Light

i have an 09T660, and there's no fuse, just a breaker behind the kick panel behind the clutch... mine quit working one day, and then i flip'd the switch and after about 3min it started smoking and i could smell burnt wires.. pulled it down and the circuitry that converts the trucks 12vdc to 120ac to work the fluorescent tubes had failed.. ended up cutting all of the circuitry out and putting to 12vdc led bulbs in..

really didn't have to rewire much since it was already 12vdc running to the light.

 

I would check the switch!! If you take your multimeter and do a resistance test between the fuse and power side of where bulb gos in. If there is no resistance 0.00000ohms than your wiring from fuse to bulb is good if there is resistance than pull switch do same test on both terminals of switch if that has 0.000ohms one way and the others way it has resistance switch is bad. If not that check both csides of switch circuit for resistance if one did have resistance it than problem is in that wire also do same test on ground side of wire. That's how almost any electric problem can be solved.