Testing door locks, Connecting door locks, Cont – Bulldog Security 1402 User Manual

Page 10: Module

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TESTING DOOR LOCKS

CONT.

wires tests (+) positive when lock is pressed and the other tests (+)

positive when they are unlocked, your vehicle has a Type A door

locking system. Make sure to mark which wire is lock and unlock. Proceed

to Connecting Door Locks, Connecting Door Locks. NOTE: Type A and

Type C locks will test the same, until you test for ground. Make sure

you run both tests before making your connections.
Type B Door Lock Test (Most Imports, some newer Fords)

Probe both of your door lock wires going to the door lock switch usually

located in the drivers kick panel. Attach the clip end of your test light

to +12V. Using the vehicles door lock controls, activate the lock then the

unlock testing both wires one at a time. If the test light illuminates when

you probe the lock and the unlock wires your vehicle has a Type B

door locking system. Make sure to mark which wire is lock and unlock.

Proceed to Connecting Door Locks.
Type C Door Lock Test (Most Fords, some Chryslers, GM Trucks)

(Optional part #778 required)

Using your test light probe both the lock and the unlock wires usually

located in the drivers kick panel. Attach the clip end of your test light

to ground probing both wires one at a time while locking and unlocking

the doors with the drivers side switch (usually the master switch). The

test light should illuminate in both switch positions. Now attach the clip

end of your test light to +12V constant, probe both wires one at a time

again. The light should then illuminate again only in reverse order. This

tells you that you have a Type C reversing polarity system. Make sure

to mark which wire is lock and unlock. Proceed to Connecting Door Locks.
Testing Switch Wire and Motor Wires for Type C Door Locks

Before connecting, you must now determine which wire is the switch wire

and which is the motor wire. Cut both the lock and unlock wires in half.

Start with both of the lock wires by placing the clip end of your test light

to ground, hold the door lock switch in the lock position, make sure you

are using the master switch (usually on the drivers door) and probe both

lock wires looking for voltage. The wire that illuminates the test light,

mark as the switch wire, the wire that shows no voltage, mark as the

motor wire. Repeat the procedure for the unlock wire.

One Wire Door Lock System

Some vehicles have a single switch wire for both lock and unlock. This

system will wire as a Type A or Type B depending on the vehicle. The

only difference being this system will require one or two resistors depending

on the make and model of the vehicle. Please consult our website for the

proper resistor value for your vehicle.

CONNECTING DOOR LOCKS

CONT.

Type B (-) Negative (5-pin harness)

LOCK

UNLOCK

BLUE/BLACK Lock

BLUE/WHITE Not Used

RED/BLACK

GREEN/BLACK Unlock

GREEN/WHITE Not Used

MODULE

Ground

FUSE

NOTE: Connect the RED WITH BLACK STRIPE wire to ground.

Type A (+) Positive (5-pin harness)