Power Door Lock Wiring

One wiring scheme is resistive rest at ground which has been used in the past by various.

Power door lock wiring.

Power door locks have been around for many year but manufacturers use different wiring schemes. On the above a second 3rd or 4th actuator could be wired in parallel to the first one. Locate the harness plugged directly into the back of the door lock switch. Basically each wire on the actuator rests on ground and then when the one relay gets activated the ground gets lifted to the actuator and power gets applied to the actuator making it go one way.

If there are no external door lock. To determine what type of door lock switch you are working with follow these three steps.