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INSTALLATIONINSTRUCTIONS

The rpm activation points and cylin-

der select are programmed through

the push buttons on the LED panel

(Figure 1). Press the Mode button,

and notice that the indicator light

above the On RPM lights. When that

point is on, you can scroll the rpm

value up or down with the arrows on

the left of the panel. Once your On

rpm is set, push the Mode button

until the Off RPM point lights, then

set the Off rpm point. Note that if the

rpm point is not changed within 2-seconds, the screen returns to the current rpm reading (zero when

the engine is not running). After setting the On and Off points, press the Mode button to program the

Cylinder Select Valve (default is for 8-cyl.).

Figure 2 Wired to a Stock Inductive Style Ignition at the Coil Negative Terminal.

WIRING

RED

This is the On/Off wire. Connects to switched 12 volts.

BLACK

Connects to a good ground source.

WHITE

Signal Input. Provides the trigger signal from a tach input, +5-12 volt signal from

an ignition tach output terminal, ECU output or coil negative terminal.

GRAY

Normally Closed. This wire will remove the ground source at your desired

On rpm, and complete the ground circuit at the set Off rpm.

Note: The output wires are capable of a switch load of 2.5 amps, continuous. The operating

input voltage of the Switch is 9-18 volts.

OUTPUT WIRES

YELLOW

Normally Opened. This wire will provide a ground source at your desired On

rpm, and remove the ground at the set Off rpm.

Figure 1 Programming the Digital Switch.