Trying to locate the origin of the wires going to the rear door buttons for my license plate lights. Also. High beams do not work unless I hold the stalk rearward. Ideas please folks. I'm needing to get this sprinter inspected this next week. I've gotten almost everything else finished. After this little stuff is done I'll be working on body work. Oh one other item on my bucket list. Instrument panel doesn't light up. No amount of dimming works for it.