SETTING THE WARNING LIMITS, CYLINDER SETUP, AND UPDATE SPEED:
The setup is done using the function switch. The tachometer can be calibrated two different ways.
The green wire is used to enter and change the warning settings. You will need a switch connected with
one side to the green wire and the other side to 12 volts.
1. To enter the set mode, turn the key on with the switch pressed. The gauge will display “SEt”.
2. Release the swtich. The gauge will display “HI” and then change to the current hi rpm warning
point. (2800 – 15,200)
3. Each time you momentarily press the switch the warning will increase 200rpm.
4. When the desired warning value is displayed, keep the switch held for about 2 seconds. The
gauge will display “CYL”.
5. Release the switch. The gauge will display the current cylinder setting. (1-15)
6. Each time you momentarily press the switch the number will increase by 1.
7. When the desired cylinder setting is displayed, keep the switch held for about 2 seconds. The
gauge will display “SPd”.
8. Release the switch. The gauge will display the current update speed. (slow “SLO” or fast “FSt”).
9. Each time you momentarily press the switch the display will change.
10. When the desired update speed is displayed, keep the switch held for about 2 seconds. The
gauge will display “--”.
11. Turn the key off.
FUNCTION SWITCH/RECALL HIGH RPM
The function switch is connected with one wire to a 12 volt source and the other wire to the green
wire from the tachometer harness. The function switch is used for calibration and to recall the highest
rpm reached since the last reset. Pressing the function switch while the gauge is running will display “HI”
and then the current high rpm. This will repeat every 2 seconds. Holding the function switch for 8
seconds will reset the high rpm.
The high rpm recall is updated every 1/8 second regardless of the display update rate. This
allows it to catch the highest rpm which might be missed at the slow update rate.
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 blue wire has 12 volts the display intensity will be
reduced. Connect this to a park light or tail light circuit, then whenever the headlights are on the display
will dim. To have the system at full brightness all of the time, leave the blue wire disconnected.
MOUNTING:
The gauge requires a round hole 2-1/16” in diameter. It should be inserted into the opening from
the front and the U-clamp will be installed from the back. Tighten the two nuts on the U-clamp so that the
gauge is secure. Gauge depth to the back of the case is 1-1/2”. Gauge depth including the mounting
studs is 2-3/8”.
