I have a few E39 540's and for some years I have been swapping/upgrading the seats with some from other cars of the same vintage. They all have the same yellow connecting plug, and they all work well.
Now I just got a pair of E60 M5 seats that also have the same yellow connecting plug, but the M5 seats don't activate in my E39.
Can anyone say where I can get the wiring schematic for both the E39 and E60 seats so I can move some wires around to make the new seat work.