Be sure the lock is being powered by a dc source and that polarity is correct red to positive dc black to negative dc.
Reverse polarity door locks.
Both motor legs rest at ground at the relays.
In this video i break down what needs to be done and how the circu.
All wires at the doorlock switch rest at ground with the exception of the 12 volt supply wire.
If the unit continues to appear dead it must be electrically checked with an ammeter.
They neither rest at ground or 12v.
Door locks actuators reverse polarity positive switch trigger type d relay wiring diagram.
If there are four or more wires make the connections shown in diagram 4 for reverse polarity.
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If there are three wires proceed to step 2.
In this case both motor legs of the door locks are normally open.
Reverse polarity door locks this doorlock system has the factory doorlock switches wired directly to the motors in the doors.
If the magnalock is wired in reverse polarity it won t be damaged but it will not operate.
Power door lock kit 2 door universal 39 98.
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The switch when moved in either direction applies both power and ground directly to them without the use of any relays.
To lock or unlock the vehicle polarity is changed on one motor leg via a positive pulse from a switch alarm keyless entry etc.
Reverse polarity door locks vacuum type door locks mercedes vacuum door locks toyota child safety locks.
4 wire reversal door locks.
To the coil of the respective relay.
If the vehicle is a nissan and it does not have a door lock switch find the single wire in the dri.
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 doors.