w124 '92 dead electric seats

[Mac88]

hi all, decided to do the strip/clean as per the site. lo and behold they are different pulled the covers of easily then remeber to take that little plastic circlip off underneath the seat bottom lever! or the cover wont budge (took me a while to notice that) secured it to a nice bit of wood to be safe. got the cover off but no bbs just 3 springs for the memory buttons (i noticed that mem1/2 have yellow leds that the springs sit on. then i see that all the levers are enclosed in 4 seperate little boxes (could not open these) and the board they are on wont budge. drivers side had 2 plugs so cleaned the contacts and replaced/passenger side has 4 plugs not 2. did the same there as well AND replaced the 2 fuses with fresh. fingers crossed nup still dead any suggestions ....is there a relay thing for these i can replace, ps they have worked previously although when they did was random sometimes one sometimes both. feedback appreciated