MAN#650074:A
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. You can connect the blue wire to a separate, optional switch, with power to dim the display. To
have the system at full brightness all of the time, leave the blue wire disconnected.
TROUBLESHOOTING GUIDE.
Problem
Possible cause
Solution
Gauge will not light up
Red wire does not have
Connect to a location that has power.
power.
Black wire is not getting
Connect ground to a different location.
a good ground.
Gauge is damaged.
Return gauge for repair.
Gauge lights up, but displays
Cylinder setting is invalid
Gauge must be recalibrated for correct
“Er3”
number of cylinders. (see instructions)
Gauge lights up, but displays
Gauge update rate is invalid
Gauge display update must be reset.
“Er4”
(see instructions)
Gauge lights up, but displays
Gauge warning setting is
The rpm warning point must be reset.
“Er5”
invalid.
(see instructions)
Gauge lights up, but rpm
Gray wire is not connected
Check connection from gray wire to
will only show zero.
properly.
engine tach signal.
Pull-up wire needed on tach
Connect White/Red wire and Gray wire
signal.
together.
Gauge is not getting a tach
Check location that the tach signal wire is
signal from the engine.
connected at the ignition system.
Tach output from ignition
Check for 4-8 V AC on tach signal wire,
module not working.
Replace ignition module if necessary.
Gauge is not calibrated
Gauge must be recalibrated (see instructions).
Tach reading is erratic or
Tach signal wire is loose
Check all wire connections and cables
jumps around.
or broken.
for breaks.
Update rate is too fast.
Reset display update speed to slow.
Poor ground connection.
Check ground on tachometer
and ignition/engine.
Tach reading is incorrect.
Gauge is not calibrated
Gauge must be calibrated.
correctly.
Gauge will not dim.
Blue wire is not connected
Check wiring. Blue wire should
correctly.
have 12 volts to dim gauge.
Gauge remains dim at all
Blue wire is getting power
Connect blue wire to a switch that has
times.
all of the time.
power only when the gauge should dim.
Gauge will not go into the
Switch is not being held
Press and hold switch while powering the
SETUP mode.
in during power up.
gauge.
Switch is not connected
Make sure that the switch supplies 12V
properly.
to the green wire when pressed.
Switch is defective.
Replace push button switch.
Blue wire is getting power
Disconnect or ground the blue wire while
all of the time.
doing the gauge setup.
Gauge will not display the
Switch is not connected
Make sure that the switch supplies 12V
high rpm recall.
properly.
to the green wire when pressed.
Switch is defective.
Replace push button switch.
