So I found the control module. And the black plug with the bigger pins was melted and ruined the module and the plug . I would love to find a manual track for this so it can't happen again. Do you have any idea if they are out there and where?

 

On my car, 1993 V12 5.3 litres both seats stopped working completely. Checked all four bladefuses - all were OK.
Noticed also that electric adjustment of side mirrors had stopped working. Found the blade fuse 3A blown. Replaced that one and - voila - adjustment of electric seats on both sides worked just fine again!!

British engineers...

Henrik