In an automobile, you may achieve good results by simply placing the external antenna on the top of the dash, at the base of the windshield. A piece of the rubber non-skid shelf liner material available in recreational vehicle supply stores will help hold the antenna in place. This may not work well if you have a cab-over design pickup truck camper or motor home. If dashboard reception is poor, simply relocate the antenna mod- ule elsewhere on the vehicle for a clearer view of the sky.

Power Connections

Your unit comes with a power/data cable that splits into three ends, each with several exposed wires (shown in the following figure). The end with 4 wires (blue, yellow, orange and shield) is a Data cable that connects to a NMEA 0183 interface. The end with three wires (red, black and shield) is a power cable that connects to a NMEA-2000 buss. The thicker three-wire cable (red, black and white) is the Power Supply for your unit (and optional external speaker connection for some units).

Power Supply wires: red, black and white

To unit

NMEA-2000 Power wires:

red, black and shield

Data Cable wires: blue, yellow, orange and shield

The Power/Data cable for this unit.

Depending on your configuration, you may not use all of these wires. (For example, many units cannot operate an optional external speaker, so the white wire on the Power Supply cable isn't functional.) The fol- lowing segments include instructions for installing all the wires that you will use with this unit.

Powering a NMEA-2000 Buss (NMEA-2000 Power cable)

A NMEA-2000 buss must be connected to a power source to operate. If you have a pre-existing NMEA-2000 installation, it may already be connected to another power source. If your NMEA-2000 buss is already powered, you can ignore the NMEA-2000 Power cable. Never attach two power sources to a single NMEA-2000 buss.

If you do need to power your NMEA-2000 buss, attach the NMEA-2000 Power cable to your boat's battery just as indicated in the following segment for connecting your unit's Power Supply cable. The NMEA-

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Lowrance electronic LMS-480M, LMS-480DF manual Power Connections, Powering a NMEA-2000 Buss NMEA-2000 Power cable