11
4. TWO PIN DOOR LOCK/UNLOCK HARNESS, CONTINUED
Negative Lock Output (GREEN)
Negative Unlock Output (BLUE)
The door lock / unlock outputs are designed to control several different types of systems which may require
additional parts. Please review the wire and location chart to see which type of door lock system is in your
vehicle. The most common types are shown in the diagrams below.
One wire Positive / Negative Multiplexed (resistor based system)
Locate the lock / unlock wire at the vehicle’s lock / unlock switch.
Verification: This wire will show variable positive voltage or ground when the switch is activated. Please
consult the wire and location chart for specific resistor values and polarity for your vehicle.
Connect the GREEN and BLUE wires shown in the diagram below. Use Code Alarm part HDRLY (an SPDT
relay, not included).
Aftermarket door lock / unlock actuators (not supplied use Code Alarm part # DA1 ):
Connect the GREEN and BLUE wires shown in the diagram below. Use Code Alarm part HDRLY (an SPDT
relay, not included).
30
87
87a
86
85
Fused +12 Volt
Battery Source
Lock
Unlock
Door
Lock Switch
30
87
87a
86
85
GREEN (-) Lock Output
BLUE (-) Unlock Output
Fused +12 Volt Battery Source
For Positive Polarity Systems
Or
Chassis Ground For
Negative Polarity Systems
Resistor
Resistor
Vehicle Door Lock
Control Relays
30
87
87a
86
85
Fused +12 Volt
Battery Source
Door Lock
Actuator
30
87
87a
86
85
Chassis
Ground
Chassis
Ground
GREEN (-) Lock Output
BLUE (-) Unlock Output
Fused +12 Volt
Battery Source
M
Summary of Contents for CA 521
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