Wiring harness attached to underneath of front seats of 70 Mach1

[BillC51x]

I have a question concerning my 70 Mach 1 that has a cut wiring harness under each of my two front seats.. I haven't taken the seats out yet or re-upholstered them yet so I was wondering if these would be for the seat belt buzzer? The car is equipped with the seat belt warning indicator/buzzer?

I've heard of a Auto Seat Back Release Wiring Harness but I'm not sure of the intent/use of such an option - Can anyone provide details on either? Many Thanks