By the way, if you have an e-mail address, I'll send a scanned copy of my wiring diagram to you. Also, to access the tailgate components, all you do is remove the "inspection" cover. It'll be under the carpet that is attached to the tailgate.

1973 J-4000 pickup "custom"
(built-up EFI 4.0, SM420 4sp, Dana 20 t-case, Dana 44 HD front, Dana 60 rear)