I have a very good LTD interior that I am in the process of putting into my ZL Fairlane.
The rear seat and door trims are in

The electric front seats are not so simple.
Firsltly I cut the wiring loom from up under the the centre console - so I have a lenght of cable (to get power from somewhere) plus the switches that fit in the concole and also the wiring to the seats - I hope I can get an auto elec to sort it out.
Shouldn't be too hard should it?
Secondly, the driver's seat didn't budge when it was in the LTD. After I took it out of the LTD I found that the seats have three motors. So I'm thinkin' that the problem may not be the motors but the wiring or switch.
Sound reasonable to you guys?

wouldnt be the first time one of the motors has failed

i'm gonna go curl up with the workshop manual and go through the wiring schematics and find out what wires/plugs you need to tap into

If one of the three motors fail, does that mean they all stop Interceptor?

i don't think so, it may mean that it will fail to move in the direction that the particular motor is for