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© 2006 directed electronics
ing 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 harness. Mercedes-Benz and Audi
1985 and newer.
■
TTyyppee FF::
One-wire system - cut to lock, ground to unlock. This
system is found in late-model Nissan Sentras, some Nissan
240SX, and Nissan 300ZX 1992 and later. It is also found in
older Mitsubishis, and some early Mazda MPV’s.
■
TTyyppee GG::
Positive (+) multiplex. This system is most commonly
found in Ford, Mazda, Chrysler and GM vehicles. The door lock
switch or door key cylinder may contain either one or two resistors.
■
TTyyppee HH::
Negative (-) multiplex. The system is most commonly
found in Ford, Mazda, Chrysler and GM vehicles. The door lock
switch or door key cylinder may contain either one or two resistors.
at the switch
■ Three-wire switches will have either a constant ground input or
a constant (+)12V input, along with the pulsed lock and unlock
outputs to the factory relays.
■ Many BMW’s and VW’s have no external switch. The switches are
inside the actuator, and instead of pulsing, the proper wires will
flip-flop from (+)12V to (-) ground as the door locks are operated.
■ Direct-wired switches will have a (+)12V constant input and one
or two (-) ground inputs, along with two output leads going
directly to the lock motors.
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