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  #1  
Old 05-11-2013
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Need to seal this up:

Got a little fitting on the back of my boat that has a cable from the battery to the ob motor thru it. Problem is it's the cable and nothing else in the hole. It's above the water line, but with the large amounts of rain we've had this year I'm getting some water in my bilge (I hope this is the culprit).

From the outside:



From the inside:



Do they make a seal or boot or something for this? Should I replace it with another kind of fitting?
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Old 05-11-2013
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Re: Need to seal this up:

How about putting a clam shell cover over it to keep rain water out.
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Old 05-11-2013
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Re: Need to seal this up:

Pull it out, redrill the hole and fill with epoxy.

Or stuff it full of sealant for a quick fix. But you should really do the above.

Edit: whoops, for some reason I thought the wire wasn't needed. Perko makes a decent 12v connector

That said unless tht hole is flush to the deck and in the path of a lot of runoff I doubt it can be contributing much to your bilge leaks. But look into it because it could be leaking into the core.

Perko 1190DP0CHR 12V Marine Watertight Deck Connection:Amazon:Sports & Outdoors Perko 1190DP0CHR 12V Marine Watertight Deck Connection:Amazon:Sports & Outdoors


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Last edited by asdf38; 05-12-2013 at 02:16 AM.
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Old 05-11-2013
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Re: Need to seal this up:

waterproof plug and connector?
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Old 05-12-2013
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Re: Need to seal this up:

Hi,

You can go with what Denise has suggested, although I would op for the style that has a screw on cap and plug assembly rather then the push on. The other option is a thru hull for wire. Basically a compression fitting with a rubber type of stopper that the wire passes thru and a cap that pushes it down and squeezes it tight around the wire. The wire must be round for it to work properly. If its for the gen or starter then I'd prolly op for the plug assembly and leave it connected to the OB when it is removed.

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Old 05-12-2013
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Re: Need to seal this up:

What you are looking for is called a "cable gland", and they are available in all shapes and sizes.

I used something like this for cable penetrations on my boat:


Deck Gland

With smaller wires you may be able to get away with one like these:



Essentially the cable passes through a rubber "plug" which is compressed when the fitting is screwed together making a perfectly weatherproof seal.
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Old 05-12-2013
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Re: Need to seal this up:

Hi again,

Here are a couple of pics to demonstrate what I was talking about.

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Need to seal this up:-passthrucable.jpg   Need to seal this up:-deckcableplug.jpg  
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Old 05-13-2013
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Re: Need to seal this up:

Thanks all. It may or may not be where I'm getting water, but it looked like the best place to start.
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Old 05-13-2013
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Re: Need to seal this up:

always a good place to start. If there is a hole, water will find it
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Old 05-13-2013
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Re: Need to seal this up:

I have a similar issue; the original 12VDC fitting for the OB was corroded, so last year I just made a longer pigtail for the motor and ran it through the scupper to the battery; bypassed the fitting completely.

This year, I'm already in the water with a new engine; the new cord is not round and I also have a transducer cable to run to the stern. My plan is:
!. Pull out the old fitting to open up the hole
@. Seal the inner surface of the hole with epoxy (probably not done when drilled)
#. Run both cables through the hole
$. Anchor the cables on the inside of the opening
%. Goop the opening up with black silicone (as neatly as possible)

That should kick the can down the road until next season. There are only so many hours available for commissioning.

Ken
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