My 1998 Wagon has electrically folding mirrors which are unable to be folded from the central locking. That isn't a problem as I can scheme up a suitable widget but I would like to know exactly which of the wires that feed the vacuum locking pump assembly carry the trigger signals to lock and unlock the car. It will save me a lot of work with a pin and a meter if I can find out another way. Does anybody here know, please?