i already had the interior out (and very happy with a mint floor!),
and from what I saw of those seat belt wiring, let alone I have a '73 Satellite SP interior with God knows what exactly buckets I have,
I assure you I won't be tryin to get the seat belt buzzer working.

Stick it on the fire wall with the connector near it, maybe.

But it starts and runs and drives now and I am not messing with the jumper.