you need to make good the wiring/connector before connecting it to a new door interlock.you can use quarter spade connectors and individually connect them to the new door interlock.just make note which ones go where.As for E40 it could be as simple as a door lock and sort wiring however sometimes they blow the main PCB when they fail.Very difficult to know unless you can see components blown on main pcb so usually fit new door lock and pray it works
CK
March 2013