[screwdiver]

I found out what the fading wire was the hard way. My dome light stopped going on when the door was open, thought it was due to some wiring in my headliner going bad, but then i looked in my footwell one day and found that my shoe had caught 2 wires and broke them, one blue/black (dome) and one red/black (rear defrost LED). The rear defroster LED was broken for a long time until I found it.