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  #1  
Old 05-13-2013
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Lighting Rubic's Cube

I took apart the one light on the cabin ceiling. There are two bulbs inside of it that fixture are connected by metal bars.

There is only one panel switch for cabin lights.

A white wire snakes from the panel snakes along the ceiling and then goes through the roof. There is a white wire coming back down into the light. One presumes it is the same. It is attached to one of the two grey wires.

Two grey wires come out of the mast support and appear to go through the side of the piece of wood to which the light is attached. One of the grey wires is attached to one of the light bulbs. The other light bulb is wired to to the white wire.

I want to replace these bulbs with LED's but I have no idea what wire goes where.

Any and all suggestions welcomed.

Thanks
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Old 05-13-2013
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Re: Lighting Rubic's Cube

Time to pull out the multimeter and figure out what each wire does. Keep your fingers clear when you plug in your shore power cable just to be safe
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Old 05-13-2013
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Re: Lighting Rubic's Cube

the black wires -should- be your hots. You can see they go to either side of the lamps. The white that goes to the switch -should- be the ground. Power from the hots goes through the lamps and to the switch and then to ground (think of wire as a hose and power as water)

the other white, the one that is tied into the black wire on the left, I do not know what it does. I would think that it is feeding power somewhere else. I am going to guess that somebody did some wiring on your boat sometime in the past and did not follow exactly how the factory ran it. If I were you, because I take power -very- seriously. I would remove the crimps and solder connectors onto them and I would throw the e-tape away and use shrink tubing to keep all splices and connections safe and dry
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Re: Lighting Rubic's Cube

Quote:
Originally Posted by mad_machine View Post
If I were you, because I take power -very- seriously. I would remove the crimps and solder connectors onto them and I would throw the e-tape away and use shrink tubing to keep all splices and connections safe and dry
Will do when I replace with LED's.

The large white wire coming into the fixture just seems to be passing through, connected to the 2nd grey.

I will use the BW from the first grey wire to connect to the LED.
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Re: Lighting Rubic's Cube

I think the wiring needs to be cleaned up for sure. There is a lot of discussion as to whether to crimp or to solder. A quality Crimp is going to be much more secure in the long run for sure, but few do crimps correctly. I would order some festoon bulbs in warm white, clean up the wiring and call it a day. Remember LEDs are dependent on having correct polarity, so if they don't at first work try flipping them around. There are some good sources for very inexpensive LEDs like SuperBrightLeds. They may not be regulated, but with how cheap they are you can keep several around as replacements. I would avoid the "Waly-Mart" LED replacements because they will likely be very cold color and blueish and not very pleasant.
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Re: Lighting Rubic's Cube

I suggested crimps due to corrosion. One less metal to metal contact of potentially dissimilar metals to worry about
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Old 05-13-2013
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Re: Lighting Rubic's Cube

Your into a who knows and get out the meter as the black/white wire is already a hack up it should be red/black or the new red/yellow

The white is normally ONLY a neutral on the shore power circuit and that looks like 12 volt lighting
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Re: Lighting Rubic's Cube

that is why I suggested somebody had already been through that wiring once.
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Old 05-14-2013
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Re: Lighting Rubic's Cube

To clarify....there is no shore power. Only one 12V battery that is currently AWOL.
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