355 Seats will not move

Are you talking about spider electrical seats?

 

It seems unusual that both have stopped working. Perhaps something is out of sequence. Do they not work with the seat or the roof switches?

Perhaps the 15 amp roof ECU fuse has blown? Power for the seat motors goes through the roof ECU. Do you know where the roof fuses are? (between the seat backs under the centre console upright section).

There is an orange jumper wire under each seat. Make sure these are connected. I know they interfere with roof operation, but they might also interfere with seat operation.
Also check the 10 amp AC System/Instrument fuse in the passenger footwell. These provide power to the seat switches and the roof switch. Usually there are a lot more indications that this has blown however (constant buzzing from the roof warning buzzer... and a lot of your instruments won't work)

 

If the roof/seat backlighting is working, it means that the AC/Instru fuse in the footwell is ok. That just leaves the 15amp fuse between the seats.

 

The only other thing that I can think of are the seat potentiometers have been moved during the leather repair... but I didn't think this would affect manual seat operation.

 

If you removed the tracks, it is possible to install them slightly cocked making the seats bind. Also use a light grease coat on the tracks.

 

Interesting. I wonder why the fuse/fuses blew. Those fuses carry live battery power. I suppose something might have shorted out during seat removal if the battery cutoff switch wasn't used.