In my 70 mav I still have the factory bucket seats. underneath of the driver's seat there is some interesting wiring, coming out of the seat itself. there is a old style plug too, kinda like a receiver or something. ill take a picture and post it, but would anyone have a clue to what it is? maybe the previous owner was trying to put in some seat heater or something.
even for the 70 grabber they didnt have vinyl bucket seats? hmm... ill probably have to pull them apart to find out.
I bought 73 Mach 1 seats for my car and there was a harness with a plug connected to a wire strip under the seat frame. I believe it was for the seat belt warning system when you sat down in the seat.
could be for another car like a mustang and have the solenoid in the back that unlatches the seat so yu can tip it foward when you open the door, It was a courtesy option on other fords