MANUAL #650147A
The gauge needs the red, orange, and black wires connected to operate. The red wire should have switched 12
volt power from an ACC. point on the fuse panel. The orange wire should have constant 12 volt power. The black wire
should be connected to a good ground point. When the blue wire has 12 volts, it will dim the display for night viewing.
Setting the time:
Using a small, thin object such as a toothpick or pin, press “set” buttons through front lens access holes. The
access holes are on the right side of the lens. Top “set” button advances hours, bottom “set” button advances minutes.
Each time that you make a change to either the hours or minutes, the seconds are reset to zero.
Adjusting the accuracy:
The clock is accurate to +/-2 minutes a month as it is sent. It can be tuned for better accuracy if desired. Press
and hold both of the set buttons for several seconds. The clock will display “C 0”. The “C” indicates that it is in the
calibration mode and the second number is the current calibration value. The calibration value indicates the number of
seconds to add or subtract each day. The clock can be adjusted from +7 sec/day to -7 sec/day.
Press the minute set button to change the cal value. Press the hour set button to return to normal clock operation.
Wiring:
BLACK
-
connect to a good ground point in the vehicle.
RED
-
connect to switched 12 volt power point.
(An accessory terminal will work for this.)
ORANGE
-
connect to a constant 12 volt power point.
(This will keep the correct time.)
BLUE
-
connect to the tail light circuit.
Mounting:
The gauge requires a rectangular cut out that is about 2 15/16“ x 1 11/16“. 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. Figure 2 shows the required cut out for the gauge. Figure 3 shows how the gauge mounts.
Troubleshooting guide
Problem
Possible cause
Solution
Clock will not light up
Red wire does not have
Connect to a location that has power
power.
when the key is on.
Orange wire does not have
Connect to a location that has power
power.
all of the time.
Black wire is not getting
Connect ground to a different location.
a good ground.
Power is reversed.
Connect black to negative ground, red and
orange to +12V power.
Clock is damaged.
Return clock for repair. (see instructions)
Clock will not turn off when
The red and orange wires
Connect the red to switched power, the
the key is off.
are reversed.
orange to constant power.
Clock lights up, but does
Loose connection on orange
Reconnect orange wire.
not read correctly.
power wire.
Poor ground connection.
Move ground to different location
Time is not set.
Set time. (see instructions)
Clock is damaged.
Return clock for repair. (see instructions)
Clock will not keep time.
Orange wire does not have
Connect to a location that has power when
constant power.
the key is on or off.
Loose connection on orange
Reconnect orange wire.
power wire.
Poor ground connection.
Move ground to different location
Clock will not dim.
Blue wire is not connected
Check wiring connections.
correctly.
Clock 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.
Battery is very low.
Recharge or replace vehicle battery.
Clock is damaged.
Return clock for repair. (contact factory)
