the unit, you should always shut off power to the power cable, especially 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. Make sure to attach the in- line fuse holder to the red lead as close to the power source as possible.
For example, if you have to extend the power cable to the battery or power buss, attach one end of the fuse holder directly to the battery or power buss. This will protect both the unit and the power cable in the event of a short. It uses a
To unit
Transducer
Optional power off switch for 
saltwater installations
Red wire with
3 amp fuse
Black wire
12volt battery
Power connections for FishStrike 1000c and SeaChamp 1000C DF
sonar/GPS units.
WARNING:
This product must be independently fused with the enclosed
If a malfunction happens inside the unit, extensive damage can occur if the enclosed fuse is not used. As with all electrical devices, this unit could be damaged to a point that it is unrepairable and could even cause harm to the user when not properly fused.
CAUTION:
Do not use this product without a
This unit has reverse polarity protection. No damage will occur if the power wires are reversed. However, the unit will not work until the
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