[yelcab1]

That is a major fire hazard. I would not drive it at all until I fix it. Sorry but I do not see an easy answer. If it was my car, I would disconnect the fuse box (taking pix and keeping notes and labeling all the wires in and out of the box). Maybe even remove the gas tank to get to the wires underneath. THen visually inspect all the wires to see which ones have the insulation worn off or shorted out.

If there was sparking and smoke, then you can be sure that you will find the insulation browning out, the colors have burned off, or the rubber melted off.

No easy answer, electrical shorts and problems are some of the hardest to find in an automobile. And it is one of the few causes that will burn your car down, so ... find it and fix it.