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HOOD PIN SWITCH
This feature will keep the engine from starting or shut off the engine when the hood is opened.
Locate a good chassis ground, if at all possible do not install the pin switch in the rain gutter.
Drill a 5/16 hole, insert the pin switch into the hole and tighten. Check for the hood adjustment,
there is approximately 1/4" adjustment in the pin switch. Close the hood easy, making sure that
the pin switch is not keeping the hood from closing all the way, if it does, cut off approximately
1/8" of the black plastic off of the top of the hoodpin switch and try closing the hood again.
Check to make sure that the hoodpin switch remains neutral when the hood is closed and shows ground
when the hood is open. Plug the BLACK WITH BLUE STRIPE wire from the 18-pin harness into the bottom
of the hood pin switch.
TACH INPUT (Optional) (Must use with diesel engines)
By this time, you should have determined the way you want your vehicle to start (tach or tachless).
If you have chosen the TACHLESS start option, simply proceed to the next step and skip the following
instructions. Make sure this wire is taped up when not used. For TACH mode connect the BLACK WITH
WHITE STRIPE wire from the 18-pin harness to the negative side of the coil or the tach wire at
the coil pack under the hood. To find the coil pack follow the spark plug wires back to the
termination point. To operate in tach mode, make sure to program tach option, see programming
tach option page 11.
DOOR PIN TRIGGER
To determine if your door pin is turned on with (+) positive or (-) negative trigger, probe for a
wire in the driver's side kick panel that switches polarity when the door is closed then opened.
You can also find this wire going to the under dash courtesy lights.
•If this wire reads +12V when the door is open and (-) ground when the door is closed, it is
positive.
(most Fords)
•If this wire reads (-) ground when the door is open
it is (-) negative.
If your vehicle is a (+) positive door pin connect the BLACK WITH WITH YELLOW STRIPE wire from
the 18-pin harness to the door pin wire. If your vehicle is a (-) negative door pin, connect the
GREEN wire from the 18-pin harness to the door pin wire. Make sure you tape up the unused wire.
NOTE: When testing the door pin wire, make sure the dome light is on. Some vehicles, if the door
is left open for a period of time, the dome light will go out, resulting in a false reading.
DOME LIGHT (Optional Part #775 required)
Once you have determined if your door pin wire is a (+)
positive or (-) negative and you have made this connection,
next, you must decide if you are going to connect the dome
light supervision function which will require an optional
relay. This relay will also need to be connected in a (+)
positive or (-) negative configuration depending on the
type of door pin in your vehicle.
(+) Positive Dome Light Type (Most Fords)
Connect the VIOLET wire from the 18-pin harness to the
WHITE wire on the optional #775 relay harness. Connect
the BLACK and the Blue wire on the optional relay to
+12V constant fused at 20 amps. Connect the YELLOW wire
to the dome light circuit. See diagram.
(-) Negative Dome Light Type (All other vehicles)
Connect the VIOLET wire from the 18-pin harness to the WHITE
wire on the optional #775 relay harness. Connect the BLACK
wire on the optional relay to +12V constant fused at 5 amps.
Connect the BLUE wire to ground. Connect the YELLOW wire
to the dome light circuit.
SIREN OUTPUT (+) (Optional part #724)
Connect the GRAY wire from the 18-pin harness to the RED (+) positive input on the siren. Make
sure you ground the BLACK wire on the siren.
and +12V when the door is closed,
DOME LIGHT SUPERVISION
Optional part #775 required.
YELLOW
WHITE
(-) VIOLET
FROM 18-pin
wire harness.
BLUE
RED
DO NOT USE THE RED WIRE, TAPE OFF.
(+)
To Dome Light
Circuit
BLACK
87a
+12 VOLT
FUSED AT
5 AMPS
(+) OR (-) Depending
on Door Pin Type
6
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