instrument panel light and shifting light

Hi, so i just got my car back from the dealer after i had the timing belt changed and when i was driving home i noticed that none of my instrusment panel lights worked with the headlights on. this happened before when i replaced my stereo but all i did was replaced the fuse and it worked fine for a month now. but this time all the fuses are fine, what else is wrong.
 
it's a 98 accord v6, im hoping it's not the switches that are crapped, i would have to blow up my car

I had the same issue when I wired up the "dimmer ground" wire for my stereo in my 99. Whenever I turned my headlights on and the interiors would turn on it would blow the 10A fuse. All I did was clip the dimmer wire and now it works fine, my deck just doesn't dim at night. I doubt the timing belt work has anything to do with an electrical problem.