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 with headlights on.
Gauge remains dim at all
Blue wire is getting power
Connect blue wire to location that only
times.
all of the time.
has power when the headlights are on.
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.
