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CONNECTING “TYPE C LOCKS”
•If your vehicle has a “Type C” door locking system,
you will need to purchase optional part #778. Once
you have purchased the relays, follow the diagram on
page 18 for “Type C” door locks.
TYPE C - (Optional Part #778 required)
Reverse polarity door locks. Used on most GM trucks,
Ford and Chrysler vehicles.
87a
BLACK
RED
BLUE
BLUE
YELLOW
WHITE
BLACK
RED
9
86
30
87a
87
85
86
30
87a
87
85
CONNECTING “TYPE D LOCKS”
Adding after-market door lock actuators will also
require adding 2 relays. For simplified installation,
we highly recommend Bulldog’s pre-wired double relay
door lock socket and harness, part #PR01010 (Model
772).