If possible, keep the power cable away from other boat wiring, especially the engine's wires. This will provide the best isolation from electrical noise. If the cable is not long enough, splice #18 gauge wire onto it.
The display power cable has three wires, white, red and black. Red is the positive (+) lead, black is negative
For example, if you have to extend the power cable to the power bus or battery, attach one end of the fuse holder directly to the power bus or battery. This will protect both the unit and the power cable in the event of a short.
This unit has reverse polarity protection. No damage will occur if the power wires are reversed. However, the unit will not work until the wires are attached correctly.
Power Diagram A
To unit | Mandatory |
|
| network |
|
| ||
| switch | |
|
| |
| NMEA 2000 |
|
| Power Cable |
|
| Shield |
Display Unit |
Power Cable |
| |
Recommended | Black | |
| ||
display unit | White | |
(unused) | ||
|
Data Cable
Black
Red 
12 volt DC
power source
Use this method if you are powering the display unit and a GPS mod- ule or the display unit and a NMEA 2000 network. (Fuses may be dif- ferent from those shown.).
The network and any NMEA 2000 devices, including the GPS module, will not operate unless the NMEA 2000 Power Cable is connected to power. The NMEA 2000 power cable must be connected
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