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To determine the resistor values, the door lock switch/key cylinder must be isolated from the factory
door lock system. For testing, use a calibrated digital multimeter that is set to ohms.
IMPORTANT! To ensure an accurate resistance reading, do not touch the resistor or
leads during testing.
1. Cut the output wire from the door lock switch/key cylinder in half.
2. Test with the meter from the switch side of the cut door lock switch/key cylinder wire to a
reliable ground source. Some good ground references are the ground input source to the door
lock switch/key cylinder or battery ground.
3. Operate the door lock switch/key cylinder in both directions to determine the resistor values. If
the multimeter displays zero resistance in one direction, no resistor is needed for that direction.
4. Once the resistor value(s) is determined, refer to the wiring diagram for proper wiring.
IMPORTANT! The H2/A and H2/B wires are not required for wiring the door locks. For
detailed wiring instructions for these two wires, refer to the beginning of the Door Lock
Harness (H2) Wire Connection Guide section. Depending on the type of door lock system,
there may be additional H2 harness wires that are not used for wiring the door locks.
Type H Door Lock System Wiring Diagram:
20
©
2002
Directed Electronics, Inc.
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