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Go Back   SailNet Community > On Board > Gear & Maintenance > Electrical Systems
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Old 03-24-2013
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More circuits then color code charts cover

I recently bought a c&c 36. I have been slowly working to bring some of the wiring out of the seventies where it seems to be stuck. I have rewired one bilge pump so far as the wires were so corroded that it couldn't pump water out of the boat. This weekend I started to work on the wiring to the mast. I have five wires running up the mast plus the S50 autohelm wind instrument. I re hooked the wind instrument with out trouble. My all a round white light a top the mast i was able to get to work with temp jumper wires for testing. The other group of three wires had no continuity when tested with an ohm meter. My old glass fuse panel lists a masthead light a deck light and spreader lights however looking up all i see is one fixture half way up the mast the points toward the foredeck. I can't see any lights on either the lower spreaders or the upper spreaders. I plan to replace the wires from the panel to a junction bus near the mast but looking at the color code charts for abyc i don't know what colors to use. Also anyone know if there are some other lights that i am just missing or the might have been removed from this boat?
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Old 03-24-2013
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Re: More circuits then color code charts cover

Real easy. You only need two colors. Use red for positive. Use black or yellow for negative. Do that for each 12VDC circuit.

Most sailboats have wires running to:

1. an anchor light atop the mast;
2. a steaming light on the forward side of the mast, used when under power; and
3. spreader lights.

Some sailboats in addition to the above may have 12V wires for:

4. a deck light, used to light the foredeck; and
5. a tricolor lamp atop the mast.

It's a very good idea to label each wire, so you know where they go.

Bill
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