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© 1998 Directed Electronics, Inc. Vista, CA
N438 7/98
Type C - Reversing Polarity
Interfacing with a reversing polarity system requires either two relays or one 451M (not included).
It is critical to identify the proper wires and locate the master switch to interface properly. Locate wires that show
voltage on lock and unlock. Cut one of the suspect wires and check operation of the locks from both switches. If
one switch loses operation in both directions and the other switch operates in one direction only, you have located
one of the target wires. The switch that lost all operation is the master switch. If one switch works both directions
and the other switch works only one direction, you have a Type A system. If both switches still operate, but one or
more doors have stopped responding entirely, you have cut a motor lead. Reconnect it and continue to test for an-
other wire. Once both wires have been located and the master switch identified, cut both wires and interface as
shown below.
Important! If these are not connected properly, you will send (+) 12 Volts directly to (-) ground,
possibly damaging the alarm or the factory switch.
Type D - Aftermarket Actuators
In order for this system to control one or more aftermarket actuators, a 451M or two relays (optional) are needed.
Vehicles without factory power door locks require the installation of one actuator per door. This requires mounting
the door lock actuator inside the door. Other vehicles may only require one actuator installed in the driver's door if
all door locks are operated when the driver's lock is used. This type of installation is required to operate factory lock
systems in Volvo (except 850), SAAB, and most Mazda, Isuzu and Subaru models.
The fuse used on 12 volt inputs should be 7.5A per motor installed in the vehicle.
IMPORTANT! Do not
connect the outputs
of the alarm directly
to the actuator!
85
86 30
87 87A
H 2/A GREEN (-)
LOCK WIRE
DIA-28
85
86 30
87 87A
(-) CHASSIS GROUND
(+) 12V
CONSTANT FUSED
H 2/C BLUE (-)
UNLOCK WIRE
(+) 12V
CONSTANT FUSED
(-) CHASSIS GROUND
(+) 12V
CONSTANT FUSED
85
86 30
87 87A
85
86 30
87 87A
H 2/A GREEN (-)
LOCK WIRE
(+) 12V
CONSTANT FUSED
H 2/C BLUE (-)
UNLOCK WIRE
(+) 12V CONSTANT FUSED
MOTOR (+)
LOCK WIRE
MOTOR (+)
LOCK WIRE
MASTER SWITCH
DIA-27
LOCK
UNLOCK
(+) 12V
X
X
CUT
X
X
CUT
(-) CHASSIS
GROUND
(+) 12V CONSTANT FUSED
(+) 12V
CONSTANT FUSED
