2

IGNITION SYSTEM

®

Connect ORANGE wires to a device

to be turned ON at a selected RPM

Connect PURPLE wires to a device to

be turned OFF at a selected RPM

Connect to 12 VOLT source

DO NOT connect to COIL +

RED

BLACK

To engine block or

chassis ground

GREEN

To tachometer

Connect this harness according

to the instructions applicable to

the HYFIRE

To battery (+)

terminal

Used for magnetic pickup

distributor or crank trigger

To engine block or

chassis ground

HOW TO SET THE WINDOW RPM SWITCH

On the front panel there are three buttons and an LED display. The

“MODE” button cycles through the low RPM setting, the high RPM

setting, and the cylinder number select. The “UP” and “DOWN”

buttons move the RPM in 100 RPM increments in either of the RPM

modes, and select 3-12 in the cylinder select mode.

The RPM range is 1000 to 16000 in 100 RPM increments. The high

setting (H) must be at least 200 RPM higher than the low (L) setting

for the switch to operate properly. The display shows RPM in

hundreds (for example, “76” would be 7600 RPM.

Set the cylinder select mode to the number of cylinders your engine

has (4-cycle only).

C – CYLINDER SELECT

L – LOW RPM

H – HIGH RPM

DOWN

UP

WINDOW RPM SWITCH

P/N 646

MODE

VALUE

MODE

®

FIGURE 2

FIGURE 2