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Chapter 2: Installing the Display Unit 17
Power Supply
The A60 is intended for use on boat’s DC power systems rated from 10.7 to
18 VDC. The power connection to the unit should be made at either the output of
the battery isolator switch or at a DC power distribution panel. Power should be
fed directly to the A60 via its own dedicated cable system and protected by a
thermal circuit breaker or fuse on the red (positive) wire that is installed close to
the power connection.
CAUTION: Dedicated Power Connection
The A60 also supplies power for the GPS and sounder units (if so
equipped). To minimize succeptibility to display flickering due to
power fluctuations, provide the display unit with its own
dedicated connection to boat’s power.
The RED wire must be connected to the feed from the positive (+) battery terminal
and the BLACK wire to the feed from the negative (–) battery terminal. The shield
wire (drain) should be connected to the boat’s RF ground.
CAUTION: Fuse Protection
Install a fast blow 4 amp fuse on the red (positive) wire.
If a longer power cable run is required, use the supplied power cable to connect to
the display unit. Then use a suitable connector block to connect the free end to the
extension cable, taking particular care to ensure the correct polarity.
Power Connector
Pin No. Function Color
1 Battery positive (12 VDC systems) Red
2 Battery negative Black
3 Shield (drain wire) No insulation
1
2
3
D7734-1
87081.book Page 17 Wednesday, December 20, 2006 2:43 PM