Wow,you have my sympathy when it come to electrical ghosts. My crappyG.M p/u has been down for a while due to no brake lights/turn sigs or b/u light. All seemed to start one day when there was a short in the driver door power acc harness. It ground out the whole system,truck just died and I needed a jump start,then a new battery,then new tail light curcuit boards,brake light bulbs etc etc. Seems a power surge burned up a lot of stuff.