Hi guys, new here and need your help
Trying to retrofit front seats from 2009 750li and can’t turn them alive
Anyone have some suggestions what wires should be connected or maybe someone has diagram for it?
Any suggestions is welcomed, seats was working when removed
-tracked down wires from connector to control unit and left with 4 additional wires beside +/- now need to figure which is can bus and power it, for that ordered 555 signal processor to keep it awake but so far wasn’t able even to turn it on for 10 seconds

Thank you!