When I lock the car on the fob or using the switch inside the front doors lock but the rear doors try (buttons drop but not all the way) but do not lock. I have bought two replacement locks and actuators from ebay and want to check they are OK before fitting. However when I connect them (only checking one side at the moment) none of the doors lock, if I press the unlock button the solenoid will click on the old unit and one of the new units. In all cases the lock does not move. But when I disconnect the solenoid/lock from this door the car will lock and unlock the other doors.
Can someone advise why and how I can check if the replacements locks will work. Thanks