Mast wiring tip needed. - SailNet Community
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post #1 of 35 Old 04-23-2013 Thread Starter
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Mast wiring tip needed.

I know I'm new to boat wireing.
I need help.
I have a C&C 30 mk1. The mast has a steamer light and 2 spreader lights. At the very top there is a coax and a transducer cable.
The spreader lights and the Steamer light are not hooked up? They were not hooked up when I purchased the boat.
The only thing is I dont know how to wire them . Thwew is a negitive buss onder the seat where the light could be hooked up but there is no positave buss? Do i hace to run a hot wire all the way back the the switch on the cabin wall?
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post #2 of 35 Old 04-23-2013
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Re: Mast wiring tip needed.

Something sounds way to easy here. I would ask this first......Is there a reason that they disconnected the wiring in the first place?? Is there a short somewhere?
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post #3 of 35 Old 04-23-2013
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Re: Mast wiring tip needed.

Didn't mean to sound like an a$$. I think you are on the right track.
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Re: Mast wiring tip needed.

Sorry I know photos help Keep your eye on the Yellow Green White/red and the RED and Black.


[IMG][/IMG]


Here is were they end up. the look to be a positive right?

[IMG][/IMG]


The wires coming out of the bottom of the mast.


And yes I was thinking there was a problem as well? But not sure how to start. I am useto auto and house power not boat. It seams to work diff???
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Re: Mast wiring tip needed.

Yes, you have to run the hot wire from the fuse panel. There is no positive buss-- if there were such a thing you'd need to wire a switch after the bus to a convenient spot anyway.
On my boat the negative buss is under the forward dinette cushion, to port of the mast step. There is a fuse panel above the galley sink which has a "steaming light" fused switch. Positive goes from there to a connector under the dinette. This connector is actually a "segmented" bus bar which allows multiple separately fused circuits to be connected in one location. This is convenient to have under the dinette so all 12V mast connections can be connected in one area. I also run my bilge pumps to that bus.
If you find a similar separated-circuit bus bar in your dinette, just test each circuit while you try switches at your fuse panel. I suspect that it's already wired but may be unused for whatever reason.

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1977 C&C 30 Mk 1 hailing from Port Clinton, Ohio
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Re: Mast wiring tip needed.

My last post was before you posted the photo. Yes, everything is there. The bus in your bottom photo is positive. Each screw should be a separate circuit. One of those wires on the left side of the bus is your steaming light. I can't remember which one and my wiring diagram is on the boat, but just put a voltmeter on each connector and hit your steaming light switch and you'll find it.
How is your mast wiring? If you need to replace it, I'd recommend putting conduit in the mast. The absence of wires slapping around inside the mast is worth the work.

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Re: Mast wiring tip needed.

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Originally Posted by msmith10 View Post
My How is your mast wiring? If you need to replace it, I'd recommend putting conduit in the mast. The absence of wires slapping around inside the mast is worth the work.
They seam to be in good repair on the lower end/



[IMG][/IMG]
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post #8 of 35 Old 04-23-2013
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Re: Mast wiring tip needed.

C & C standard wiring from owner's manual -

Yellow - spreader light
White w/red - mast head light
Green - bow light (about half way up mast)
Red - fordeck light
ALL ABOVE RUN BACK TO PANEL

Black - ground - connects to negative buss

Sail on
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Re: Mast wiring tip needed.

Now you're good to go.

Mark Smith
1977 C&C 30 Mk 1 hailing from Port Clinton, Ohio
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Re: Mast wiring tip needed.

So run one wire to the correct buss for the switch. then use a but connector and run a new wire back to the other pole on the same switch?
Sounds simple enough. I wonder why the wires are not there now?

[IMG][/IMG]

Last edited by ltgoshen; 04-23-2013 at 10:47 PM.
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