My 1978 280z was starting and running like a beauty yesterday. I decided to remove the big ugly bumpers today and now it wont turn over or start. There is no power to the interior of the vehicle. When I turn the key it used to make a buzzing noise, no there is no noise or lights. The battery is reading good on the multimeter. The only thing I can thin of is that somehow the horn and/or the fog lights completed a circuit neccessary to start the car. Any ideas?