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2005
Directed Electronics, Inc. all rights reserved
15
Type B: Negative-Triggered, Relay-Driven System
This system is common in many Toyotas, Nissans, Hondas and most European Ford vehicles.
The switch will have three wires on it, and one wire will test ground all the time. One wire will pulse
negative (-) when the switch locks the doors, and the other wire will pulse negative (-) when the
switch unlocks the doors. This type of system is difficult to mistake for any other type.
NOT USED
VEHICLE (-)
LOCK TRIGGER
CIRCUIT
TO CHASSIS
GROUND
VEHICLE (-)
UNLOCK TRIGGER
CIRCUIT
LOCK UNLOCK
FACTORY LOCK
SWITCH
TO FACTORY
RELAYS
15A
GREEN/BLACK
LOCK #30 COMMON (OUTPUT)
WHITE/BLACK
LOCK #87A NORMALLY CLOSED
VIOLET/BLACK
LOCK #87 NORMALLY OPEN (INPUT)
VIOLET
UNLOCK #87 NORMALLY OPEN (INPUT)
BLUE/BLACK
UNLOCK #30 COMMON (OUTPUT)
BROWN/BLACK
UNLOCK #87A NORMALLY CLOSED
NOT USED
IMPORTANT!
Remember that these wires' functions reverse between Type A and
Type B.
