Reverse Polarity Door Lock System

To the coil of the respective relay.

Reverse polarity door lock system.

The switch changes polarity on a single wire that may rest at power or ground depending on the state of the door locks. If there are four or more wires make the connections shown in diagram 4 for reverse polarity. Vacuum type door locks. Found mostly on mercedes benz vehicles the movement of the door lock actuators is controlled by a central vacuum pump.

Determining the door lock system type 1 remove the door lock switch on the driver s side of the vehicle to reveal the switch wires. Both motor legs rest at ground at the relays. When the doorlock switch is activated one of the circuits is opened and 12 volts is sent to the motor to lock or unlock the. All wires at the doorlock switch rest at ground with the exception of the 12 volt supply wire.

How to wire 5 wire reversing polarity door locks in early toyota and ford. To lock or unlock the vehicle polarity is changed on one motor leg via a positive pulse from a switch alarm keyless entry etc. If the vehicle is a nissan and it does not have a door lock.