MAN# 650028
TROUBLESHOOTING GUIDE.
Problem
Possible cause
Solution
Gauge will not light up
Red wire does not have power.
Connect to a location that has power.
Black wire is not getting a good ground. Connect ground to a different location.
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 invalid.
The rpm warning point must be reset.
“Er5”
(see instructions)
Gauge lights up, but rpm
Gray wire is not connected properly.
Check connection from gray wire to
will only show zero.
engine tach signal.
Pull-up wire needed on tach signal.
Connect White/Red wire and Gray wire
together.
Gauge is not getting a tach signal from Check location that the tach signal wire is
the engine.
connected at the ignition system.
Tach output from ignition module not
Check for 4-8 V AC on tach signal wire,
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 or broken.
Check all wire connections and cables
jumps around.
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 correctly.
Gauge must be calibrated.
Gauge will not dim.
Blue wire is not connected correctly.
Check wiring. Blue wire should have 12
VDC with headlights on.
Gauge remains dim at all
Blue wire is getting power all of the
Connect blue wire to location that only
times.
time.
has power when the headlights are on.
Gauge will not go into the
Switch is not being held in during
Press and hold switch while powering the
SETUP mode.
power up.
gauge.
Switch is not connected properly.
Make sure that the switch supplies 12
VDC to the green wire when pressed.
Switch is defective.
Replace push button switch.
Blue wire is getting power all of the
Disconnect or ground the blue wire while
time.
doing the gauge setup.
Gauge will not display the
Switch is not connected properly.
Make sure that the switch supplies 12
high rpm recall.
VDC to the green wire when pressed.
Switch is defective.
Replace push button switch.
