B&G Vulcan 12, Instruction Manual

Page: 21 / 68

Power connections
7", 9" and 12" units power connection
The units are powered by 12 V DC. They are protected against
reverse polarity, under voltage, and over voltage (for a limited
duration).
The supplied power cable has four cores used for:
• Power into the system (Red and Black wires).
• Controlling power state of the unit (Yellow wire).
• Connecting to an external alarm (Blue wire).
+ _
1
2
3
5
6
4
1
Power cable
2
12 V positive wire (red) shown with fuse holder fitted
3
12 V negative wire (black)
4
Power control wire (yellow)
5
Alarm wire (blue)
6
Vessel’s 12 V DC supply
Connect Red to (+) DC using a 3 amp fuse.
Connect Black to (-) DC.
The units can be powered on and off using the power key on the
front of the case.
Power control connection
The yellow wire in the power cable can be used to control how the
unit is turned on and off.
Wiring | Vulcan Series Installation Manual
21