Testing doorlocks – Bulldog Security 22I User Manual
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MAKING MAIN POWER, IGNITION AND ACCESSORY
CONNECTIONS TO THE IGNITION SWITCH HARNESS
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02003 ACCM5 2 Commumcálions. Inc
TESTING DOORLOCKS
There are four basic types or door locks:
"Type A" Door Lock Test (Most GMs and some Chryslers)
Probe both of your door lock wires going to the door lock switch usually located
in the driver's kick panel. Attach the clip end of your test light to a good
chassis ground. Using the vehicle's door lock controls, activate the lock then
the unlock, testing both wires one at a time. If one of these 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. 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 8" 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 driver's kick panel. Attach the clip end of your test light to +12V. Using
the
vehicle's
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.
"Type C" Door Lock Test
(Most Fords, some Chryslers, GM Trucks)
Using your test light probe both the lock and the unlock wires usually located
in the driver's 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 driver's 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.
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02003 AccMs2Cocninunicjmnv(nc.