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LOCATING & MAKING CONNECTIONS
4
4. Use electrical tape to wrap, be sure to cover about 2 inches on either side of connection.
Secure with wire ties as shown.
Use this method ONLY when connecting two separate wires end to end.
Wire Tie
Electrical Tape
Wire Tie
Please see the wiring chart on this website, www.bulldogsecurity.com/wires.htm.
CONSTANT POWER (+12V, key in any position including off)
These wire(s) are in your vehicle’s main ignition harness,
usually located on the steering column coming from the ignition
switch. Probe each wire with your test light. The correct
wire(s) will show +12V when the ignition switch is in these
5 positions (ACC-LOCK-OFF-RUN-CRANK).
1. If your vehicle has only (1) constant power wire, attach
the RED wire from the 11-pin harness and both large RED wires
from the 4-relay harness to the constant power wire in
the vehicle.
2. If your vehicle has (2) constant power wires, attach the RED wire from the 11-pin harness and (1)
large RED wire from the 4-relay harness to one of these constant power wires. Then connect the other
large RED wire from the 4-relay harness to the second constant power wire in the vehicle.
IGNITION WIRE(S) (+12V in run and crank position only)
The ignition wire(s) are also located in the main harness coming from the ignition switch. Probe each
wire with your test light, the correct wire(s) will show +12V only when the ignition switch is in the
RUN AND CRANK positions. The correct wires will not show +12V when in the OFF or ACCESSORY position.
Most Ford, GM, and Chrysler vehicles 1994 and up have at least (2) ignition wires. Most foreign vehicles
have only (1).
1.Strip back the YELLOW WITH BLACK STRIPE wire from the 11-pin harness and then strip back 1 inch of
the WHITE wire from the 4-relay harness and twist both of these wires together.
2.Connect the YELLOW WITH BLACK STRIPE wire and the WHITE wire from step (1) to the ignition wire in the main
harness.
3.If your vehicle has (2) ignition wires, connect the second WHITE wire from the 4-relay harness to it.
4.If your vehicle has (3) ignition wires (some GMs) connect the second WHITE wire from the 4-relay harness to both
the second and third ignition wires in the vehicle.
SPECIAL NOTE: All 96 and newer GM trucks and SUVs have a second ignition wire (WHITE or PINK WITH WHITE STRIPE
wire). This second ignition wire must be connected.
ACCESSORY WIRE(S) THAT POWER THE HEATER/BLOWER MOTOR
(+12V in run or on positions) This wire is also in the main ignition switch harness usually located in the steering
column. Make all connections as close to the ignition switch harness as possible.
Most vehicles will have (1) accessory wire; however some Fords, newer GM vehicles and Chrysler 94 and up will have
(2) or more accessory wires. To locate these wire(s) probe for wire(s) that only show +12V when the ignition switch
is in the RUN or ON positions. This wire(s) will not show +12V when the ignition switch is in any other position.
1.If your vehicle has only (1) accessory wire connect the WHITE WITH BLACK STRIPE wire from the 4-relay harness
to this wire.
2.If your vehicle has (2) accessory wires, connect the WHITE WITH BLACK STRIPE wire to both.
STARTER/CRANK WIRE (+12V only in the start position)
The starter/crank wire is also in the main harness. Locate the wire that shows +12V on your test light only in the
cranking position. This wire will not show +12V in any other position. Attach the YELLOW WITH BLACK STRIPE wire
from the 4-relay harness to this wire. SPECIAL NOTE: Most Nissan’s have two crank wires. Connect both crank wires
in the vehicle to the YELLOW WITH BLACK STRIPE wire from the relay harness.
CHASSIS GROUND
Locate an easy to get to bolt or screw located under the driver’s side of the dash and attach the BLACK ground
wire from the 11-pin harness securely as pictured. A good ground is required for your system in order for it to
work properly.
IGNITION HARNESS
UNDER DASH
Note: Remove any paint below
the spade connector.
Factory Bolt
Spade Connector
Black Ground Wire