Just purchased an '85 and found many small issues. Rear hatch doesn't operate from door switches, and interior lights don't operate. I found some threads that point the issue to the interior light delay timer that should be located zip tied to the main bundle, front of the passenger seat under the dash. I found numerous bundles but have yet to find the delay timer. Any clues? I don't have a intelligent, pet squirrel to climb under there and can't see it with a mirror. I'm some 255 lbs and can't squeeze under. lol

 

Welcome to the forum.
Probably going to have to remove part of the dash in front of the passenger seat.