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STEP 3
Connecting of the Power Cable
The display has no ON/OFF switch. Therefore, you will need
to connect the power harness to a power source that will turn
the unit on as power is applied. The key switch or an ON/OFF
power switch will be suitable for powering the unit.
1. Connect the BLACK wire in the harness to a negative (-)
terminal or suitable ground.
2. Connect the RED wire in the harness to a positive (+) 12
Volt switchable power source (key switch, on/off switch,
terminal block, etc).
OTICE
Never use “Twist-On” or “Automotive” type
connectors. These connectors do not
electrical connection and are more likely to corrode.
STEP 4
Testing the Display Installation
Before continuing with your installation, you
should test the unit to make sure the power
wires are properly attached.
1. Apply power to the unit by turning on the
power source that you’ve attached the red
and black wires to.
2. The buzzer should beep three times while the display
illuminates all the LCD graphics for 2 seconds. “---”
will then be shown on the LCD.
If the display operates as per #2 above, continue to the
“Basic Operation” section.
If the display does not turn ON:
1. Check the power source using a test light or DC volt
meter. Make sure there is 12 volt power where the
power harness connects to both the positive and
negative sources.
2. Check the fuse holder assembly with a test light or DC
volt meter. Connect the ground for the test meter or
light to the vessel’s negative power source.
3. Remove the fuse and check for 12 volt power at the
spring located inside the fuse housing that is
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