Whenever 12 volts is applied (battery is connected), the wires begin to overheat and emit smoke. Key is OFF. It appears to be both the large black and the large white (look to be main power) going into the box. Any theories?
As you can see in the pic below, a previous owner has done a bit of fiddling with this car.
As you can see in the pic below, a previous owner has done a bit of fiddling with this car.