I have some c55 front seats, but my car is a 04-c320. Anyone have the wiring diagram for these.

 

2005 was a facelift year. They also changed the seat control modules since the older ones had several issues most notably battery drain issues. The CAN version is different between the two. Essentially the language used to speak with the modules. 2005 was also the year when Mercedes introduced a central gateway. It will make more sense to adapt the seat wiring to the old control module.