Lowrance electronic LMS-480DF, LMS-480M Powering Your Unit Power Supply cable red and black wires

2000 Power cable's red wire should be attached (with provided 3-amp fuse) to the boat battery's positive terminal, and the NMEA-2000 Power cable's black and shield wires should both be attached to the battery's negative terminal.

NOTE:

If the NMEA-2000 buss draws power directly from the boat's battery, the LGC-2000 will remain on (drawing power) all the time. The LGC- 2000's current draw is very small and shouldn't decrease the boat's storage battery life, but if this small draw is a concern, you can in- stall a switch between the NMEA-2000 buss and the battery.

Powering Your Unit

(Power Supply cable – red and black wires)

The unit works from a 12-volt battery system. For the best results, at- tach the power cable directly to the battery. You can attach the power cable to an accessory or power buss, however you may have problems with electrical interference. Therefore, it's safer to go ahead and attach the power cable directly to the battery.

CAUTION:

When using the unit in a saltwater environment, we strongly rec- ommend that you shut off the power supply to the power cable when the unit is not in use. When the unit is turned off but still connected to a power supply, electrolysis can occur in the power cable plug. This may result in corrosion of the plug body along with the electri- cal contacts in the cable and the unit's power socket.

In saltwater environments we recommend you connect the power cable to the auxiliary power switch included in most boat designs. If that results in electrical interference, or if such a switch is not available, we recommend connecting direct to the battery and in- stalling an inline switch. This will let you shut off power to the power cable when the unit is not in use. When you are not using the unit, you should always shut off power to the power cable, es- pecially when the power cable is disconnected from the unit.

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 power cable has two wires, red and black. Red is the positive lead, black is negative or ground. (There is also a white wire to power an optional external speaker for some units.) Make sure to attach the in-line fuse holder to the red lead as close to the power source as possible.

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