Routing the Main Wiring Harness
1. Locate your vehicle by make, model, and engine size in the included Reference Manual in order to identify the
location of the VSS and Tach connection locations. If your make and model cannot be located, then the Magnet
Kit must be installed. Follow the installation instructions included in this manual.
In all cases, you will need to route the Brown, Green , Purple, Yellow, and Red wires through the bulkhead
to the passenger compartment of the vehicle.
The Blue wire will need to be routed to the tach location, and the Grey & Black twin lead will need to be routed
to the VSS or magnet speed sensor location. If either of these locations are in the passenger compartment,
they will need to be routed with the Brown, Green , Purple, Yellow, and Red wires.
2. Route the wires that will pass through the bulkhead away from any hot or moving components within the
engine compartment, and be sure that they are routed to a point lower than the grommet that will be used
for entrance into the passenger compartment. This will prevent water from running along the wires and into
the passenger compartment.
NOTE : FOR EASE OF INSTALLATION, YOU SHOULD USE AN EXISTING RUBBER GROMMET WHEN
PASSING WIRES THROUGH THE BULKHEAD.IF AN EXISTING GROMMET IS NOT AVAILABLE,
CAREFULLY DRILL A 1/2" WIRE ENTRANCE HOLE IN THE BULKHEAD, AND USE THE RUBBER
GROMMET SUPPLIED IN THE KIT.
WIRING CONNECTIONS
1. Blue Wire : Connect this wire to the vehicle’s negative side of the ignition coil using the blue Female T tap
terminal provided.
2. Grey and Black Pair Wires : 1) If the vehicle has VSS wire then remove spade terminal and connect the grey
wire to the vehicles VSS wire using the red scotch lock connector provided. The black wire is not used.
2) If the vehicle has no VSS wire then connect both the black spade terminal and the grey spade terminal
to the magnet speed sensor.
3. Purple Wire : Connect this wire to the vehicle’s brake light wire at the brake light switch. ( This is the wire that
turns the brake lights on when the brake pedal is pressed ). This wire will show +12 volts when the brake pedal
is pressed and 0 volts when released. See diagram below.
4. Red Wire : Connect this wire to the co 12 VDC battery source to the brake light switch. ( This is the
wire that remains at 12 volts whether the brake pedal is pressed or not ). See diagram below.
12V only when brake is depressed
PURPLE
4) Bend cover over
and snap shut
3) Squeeze tab into
connector with pliers
1) Press existing vehicle wire
into connector slot
2) Insert cruise control harness wire
to Stop - Must go past metal tab
Constant 12V
RED
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