How To Wire Relays For Power Door Locks

If the door lock relay has any internal or wiring issues it can cause the door locks to function intermittently.

How to wire relays for power door locks.

The items we have are a cfd universal car power door lock actuator 12 volt motor a docooler car remote central lock locking keyless entry system with remote controllers. Using a pair of needle nose pliers pull out the old relay. You can have your lock unlock switch either throwing power to the relays to activate them or throw a ground to them. Except at the switch in this case both motor legs rest at ground.

Should you need to add relays for a 3 wire negative type b door lock system use the diagram below. Get the new relay out of its package. Facing the box you have two relays on the left side one on top of the other. We can then help with specific wiring info.

The switch when moved in either direction applies both power and ground directly to motor legs without the use of any relays. The remote has 10 wires coming from its harness. Locate the relay next to the cluster of different relays and solenoids. Install the new door lock relay.

One of the first symptoms of a possible problem with the door lock relay are door locks that function intermittently. That s where most wire breaks occur. Door locks 5 wire alternating 12 volts positive type c relay wiring diagram. The lock and unlock wires below refer to the switch wires not the motor legs.

Remove the old door lock relay. Open the hood if it is not already open. You tell us how you want to use your lock unlock switch as to whether you want it to throw power to the relays to lock and unlock the doors or have it to where they throw a ground. If the ground is good remove the door trim panel and check for power and ground coming into the power door lock actuator.

I know enough about electrical wiring to efficiently burn the house to the ground. On the right side you have a single relay. 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. Find the door lock relay.