well, i know i have been askin alot of questions about the electric circuits on my bronco, and now i have a new one. i was gettin ready to apply some defrost repairing stuff by permatex to my rear defrost grid ( a few lines dont work) and just before i started i notice that the entire grid is out now. the little light on the dash doesnt illuminate and i checked the fuses. what do you guys think it may be??