Keep a couple things in mind when working with the electric windows, doors/tailgate. The two fuses ( have self resetting brakers in mine) 12 and 14, one is switched power and the other is un switched power. 12 is the un switched power for the key switch in the tailgate and runs through the switch in the HVAC panel. If that switch is un plugged/broken, the tailgate window wont work.
14 is the switched power to the door windows and tailgate. The door windows and the tailgate window switch in the HVAC panel will only work when the ignition switch is on or in acc. I am hoping I am not confuseing whats going on here.
P.S. Don't buy the replacement tailgate switch that goes into the HVAC panel from Jeff's Bronco Graveyard, they wont fit the plug and you have to play with them to get them to work once you do bend the spades on the back to fit the plug. I am currently two for two on these switches being bad and they get 50 bucks a copy for them. and have spent hours on the phone and e-mails with pictures and videos to return them.
Steve
86 Bronco, XLT, 5.0 EFI, EEC IV, AOD, IFS, limited slip front and rear, 3.08 gears, Tilt steering, factory AC