Viper 500HF Installationsanleitung PDF herunterladen (Seite 13)

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Many domestically-made GM vehicles use Type A locks. However, many more GM vehicles are Type C than in pre-

vious years. The full-size pickups (1989-up), many of the S10 Blazers, the Corvette, '95 Cavalier/Sunfire 1993 -

and newer, Camaro/Firebird all use Type C door locks, and cannot be controlled without a 451M! Almost all

domestically-built Fords are Type C. Ford builds almost no Type A systems. Chrysler builds both Type A and Type

C, so use care.

Type B - (-) pulses from the switch to the factory relays

This system is common in many Toyotas, Nissans, Hondas, and Saturns, as well as Fords with the keyless-entry

system (some other Fords also use Type B).

The switch will have three wires on it, and one wire will test ground all the time. One wire will pulse (-) when the

switch locks the doors, and the other wire will pulse (-) when the switch unlocks the doors. This type of system is

difficult to mistake for any other type.

IMPORTANT! Remember that these wires'

functions reverse between Type A and Type B!

IMPORTANT! Remember that these wires'

functions reverse between Type A and Type B!

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Viper 500HF Installationsanleitung Seite 13