Owners manual

Special Conditions

For tow vehicles equipped with factory trailer towing package:

• Refer to your vehicle-owner’s manual or other information provided by the manufacturer in

determining the correct connection points for the controller.

• See Appendix section for partial list of manufacturer wiring harness to controller conversions.

For vehicles without a trailer towing package refer to the wiring diagram in Figure 4.

(-)

NEGATIVE

POSITIVE

(+)

VEHICLE MECHANICAL

STOP LIGHT SWITCH

NON-POWERED STOPLIGHT WIRE

20A

20 AMP INLINE FUSE

20A

CHASSIS/GROUND

RED

BLACK

WHITE

BLUE

SELF-RESETING

20 AMP CIRCUIT

BREAKER

STOP LAMPS

12 VOLT

BATTERY

TOW VEHICLE/TRAILER

ELECTRICAL CONNECTOR

TRAILER BRAKES

TRAILER GROUND

GROUND

(NOT FURNISHED)

Figure 4 – Wiring Diagram

WARNING:

All 1999 and later Ford vehicles without the trailer wiring package:

• The red controller wire must be connected to the light green wire of the brake

stop lamp through a 20-amp inline fuse.

• Failure to install a 20-amp inline fuse can destroy the controller and void the

manufacturing warranty.

WARNING:

1989-1991 Ford Bronco, Econoline, F-Superduty, and F150-350 Series:

• The red stoplight wire MUST splice into the turn signal connector harness and

NOT to the stoplight switch.

• Connecting to the terminal of the stoplight switch will break the switch’s terminal

and result in no stoplights and no trailer braking.