Central Door Locking Wire Connection
Checking your locking system
Please use a diode test lamp (voltmeter) for checking electric currents. Conventional test lamps conduct
too high voltage will cause damages to electronic control device. Please take care not to connect the
remote control with the “motor wire” of your central locking system as which may lead it to short-circuit
danger!
Before installation the door panels again, check the following:
1.Make sure your vehicle key is not inside the vehicle;
2.Attach the battery again;
3.Close the vehicle doors well;
4.Check the functionality of the central locking system by closing and re-opening the doors with your car
key, lock the vehicle again.
This item has door lock relays on the PCB and can directly interface with most electric power door lock
systems that drawing 20 amps or less. It can also drive aftermarket actuators directly. Some vehicle
require that an aftermarket actuator be added to the driver’s door to allow system control, see type D
wiring section.
Note: The most common type of door lock systems are Type A positive trigger, Type B negative trigger
and Type C reverse Polarity. Other Types D to type H probably require external relays when do the
installations.
Type A:
Positive trigger with three-wire (+) pulse controlling factory lock relays.
Type B:
Negative trigger with three-wire (-) pulse controlling factory lock relays.
Type C:
Reverse polarity, positive triggered
Type D:
Adding one or more aftermarket actuators. These include central locking systems without an
actuator in the driver’s door, but with factory actuators in all the other doors. Type D also includes vehicles
without power locks, which will have actuators added.
Type E:
Electrically-activated vacuum systems. The vehicle must have a vacuum actuator in each door.
Making sure that locking the doors from the driver’s or passenger side using the key activates all the
actuators in the vehicle. This requires a slight modification to the door lock wire harness.
Type F:
One-wire system: cut to lock, ground to unlock.
Type G:
Positive (+) multiplex. One wire controls lock and unlock using resistor(s).
Type H:
Negative (-) multiplex. Same as Type G system, but uses (-) pulse instead.
Here is the EC002 series central door lock wire harness principle:
Orange
White
Yellow
Orange/black
White/black
Yellow/black
NC
COM
NO
NC
COM
NO
Lock
Unlock
(Lock signal)
(Unlock signal)
Common,
Normally Open
Normally Closed
Common,
Normally Open
Normally Closed
Lock relay,
Unlock relay,
Lock relay,
Lock relay,
Unlock relay,
Unlock relay,
Type A: positive trigger with three-wire (+) pulse controlling factory lock relays.
There are 3 wires(+) pulse controlling factory locking relays, one pulses 12v for lock, one pulse 12V for
unlock, the last one is for constant 12V.
Depending on the type of the door lock system, there may be additional wires in the door lock harness
and they are not required used in wiring the door locks.
This item has door lock relays on the PCB and can directly interface with most electric power door lock
systems that drawing 20 amps or less
For some vehicles, the door locks may be controlled by an optional data bus expansion module. If so, no
door lock interface wiring is required.
Identifying the door lock system
The easiest way to determine which type of door lock system you are working with is to remove the
master locking switch itself, which is usually on the driver’s door or on the center console once you have
determine which type of factory door lock circuit you are working with, and the color codes of the switch
wires to be used, you can usually simplify the installation by locating the same wires in the vehicle’s kick
panel. If no central locking switch is found, the installation may require a door lock actuator.
NOTE: Always retest the wires in the kick panel to be sure they function the same way as the wires on the
switch.
There are 8 different types of door lock systems (Type A - H). Please search the vehicle-specific wiring
instructions online and the chart below to help determine which door lock system your vehicle uses. Most
vehicle factory door lock wires is smaller gauge and located in the driver’s kick panel or under the driver’s
dash.
IMPORTANT:
Here is wiring connection method for each type:
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EASYGUARD
Electronics
.
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right reserved.
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EASYGUARD
Electronics
.
All
right reserved.
