TACHOMETER
The tachometer is used by connecting the yellow wire from the main harness to the negative side of the coil
or to an ignition module tach output. The tachometer is adjustable for 1 – 15 cylinder settings. The 1 cylinder
setting is used for single-fire ignition systems without a buffered tach output.
The following instructions are used to set the tachometer calibration:
1. Make sure the key is off so the gauge is not powered.
2. Press and hold the function switch.
3. Turn the key on so the gauge is powered. The display will show “DISPLAY” “ .. “.
4. Release the function switch. The display will switch between “AUTO”, “AdJ”, “CYL” (cylinder select), “SET”
(shift bar), “BAR” (bar range), and “VOLT”. The odometer will show “SELECT”
5. When “CYL” is displayed press the function switch. This will place the unit in the tach calibration mode.
6. Release the function switch. The display will switch between “1 C”, “2 C”, …, “15 C”.
7. When the desired setting is displayed press the function switch. The display will show “DONE”.
8. Release the function switch. The system will now start up normally with the new setting.
TACHOMETER RED LINE/SHIFT INDICATOR
A single bar will light up to indicate a shift point or red line. The rpm where the bar lights up is user selectable and
can be turned off completely if desired. The bar is factory set to about 6000 rpm.
The following instructions are used to set the tachometer warning bar:
1. Make sure the key if off so the gauge is not powered.
2. Press and hold the function switch.
3. Turn the key on so the gauge is powered. The display will show “DISPLAY” “ .. “.
4. Release the function switch. The display will switch between “AUTO”, “AdJ”, “CYL” (cylinder select), “SET”
(shift bar), “BAR” (bar range), and “VOLT”. The odometer will show “SELECT”
5. When “SET” is displayed press the function switch. This will place the unit in the shift/red line set mode.
6. Release the function switch. The bar display will start at 2 and begin moving up. After it reaches the top it will
go out and then start back at 2.
7. When the desired rpm setting is displayed press the function switch. To disable this feature, press the function
switch while the bar is not displayed. The display will show “DONE” once the new setting is stored.
Release the function switch. The system will now start up normally with the new setting.
TACHOMETER BAR RANGE
The tachometer bar can be set to 0-5000, 0-8000, or 0-16,000 rpm full scale range. The bar is factory set to 8000
rpm full scale.
The following instructions are used to set the tachometer bar range:
8. Make sure the key if off so the gauge is not powered.
9. Press and hold the function switch.
10. Turn the key on so the gauge is powered. The display will show “DISPLAY” “ .. “.
11. Release the function switch. The display will switch between “AUTO”, “AdJ”, “CYL” (cylinder select), “SET”
(shift bar), “BAR” (bar range), and “VOLT”. The odometer will show “SELECT”
12. When “BAR” is displayed press the function switch. This will place the unit in the bar range set mode.
13. Release the function switch. The bar display will show the 5000 scale, the 8000 scale, then the 16000 scale.
14. When the desired rpm bar scale is displayed press the function switch. The display will show “DONE” once the
new setting is stored.
Release the function switch. The system will now start up normally with the new setting.
LOW OIL PRESSURE, LOW VOLTAGE, AND ENGINE INDICATORS
The low oil pressure warning is activated when the gray wire is grounded. Connect this wire to the oil
pressure switch or the negative side of the oil warning light. The low voltage warning is activated when the voltage
at the red power wire drops below 11.5 volts and there is a tachometer signal or below 10.5 volts when there is no
tachometer signal. The “ENGINE” indicator is activated when the white/red wire is grounded. Connect this to the
ECM or ignition module black/yellow wire or leave it open on earlier systems.
NIGHT DIMMING
Your display system has a dimming feature that dims the display intensity. Normally the system is at full
brightness for daytime viewing. When the brown wire has 12 volts the display intensity will be reduced. A toggle or
on/off push button switch can be connected to this wire if this feature is desired. To have the system at full
brightness all of the time, leave the brown wire disconnected.