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programmer interface, 3-pin port
The black 3-pin port is provided for personal computer programming of the unit. The unit can also be programmed
using the Bitwriter (p/n 998T). When using the optional PC Interface module, or hand-held programmer, it is
possible to configure any and all of the programmable functions as well as lock the Transmitter/Receiver and
System Features Learn Routines so that unauthorized users cannot change the configuration or program trans-
mitters to the unit.
When the learn routines have previously been programmed using an optional hand-held system programmer
(p/n 998T) or PC Interface module, they may have been locked. Before proceeding with reprogramming
the learn routines, they must be unlocked with either the 998T or the PC Interface module - this cannot be done
manually with the Valet switch.
door lock harness (H4) wire connection guide
______
H4/A
______
H4/B
______
H4/C
This system can control two common power door lock types without any additional parts! With certain vehicles,
or if an actuator is to be installed, either a P/N 451M Door Lock Relay Satellite or two relays will be required.
IMPORTANT! If you mistake a Type C direct-wired system for a Type A positive-pulse system, the
module will be damaged!
type A: (+) 12V pulses from the switch to the factory relays
The system can control this type of system directly, with no additional parts. The switch will have three wires on
it, and one will test (+)12V constantly. The others will alternately pulse (+)12V when the switch is pressed to
the lock or unlock position.
If you cannot get to the switch, and you find a set of wires that pulse (+)12V alternately on lock and unlock,
you must take care to ensure that it is not a Type C direct-wire system.
© 2000 Directed Electronics, Inc. Vista, CA
GREEN
EMPTY
BLUE
(-) LOCK, (+) UNLOCK OUTPUT
UNLESS USING 451M
(-) UNLOCK, (+) LOCK OUTPUT
21
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