Power Door Lock Relay Wiring

Using a pair of needle nose pliers pull out the old relay.

Power door lock relay wiring.

Remove the panel that covers the area under the stereo. That s where most wire breaks occur. Should you need to add relays for a 3 wire negative type b door lock system just change both normally open terminals 87 from 12v to ground. If your alarm or keyless entry has positive outputs only you will have to connect the other side of the coils to ground and connect your outputs as shown.

Locate the door lock relay. For those located under the dash in the middle of the cab behind the stereo. The mechanical latching relay only requires it s coil to be momentarily energized to change and maintain the opening or closing of it s contacts. Remove the old door lock relay.

Here s a power door lock wiring diagram for a 2009 chevrolet malibu. Find the door lock relay.