Sounds like you grounded out your unit, or something in line for the power of the unit. Check your fuses, also check to make sure that there are no bare wires that are touching metal (the wires you tucked?). There may also be an inline fuse up by your head unit on the red wire (typically), that may have blown as well. If it is blown, you grounded it out. Fix the grounding problem before replacing the fuse. I am unfamiliar with the whole fog light setup you described, but I hope this helps.