Waterproof electrical penetrations

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Waterproof electrical penetrations

Postby El_Ducko » Mon Mar 13, 2017 10:24 pm

What did everyone used to waterproof around the wires that are routed out of the trailer to the tongue mounted battery box?
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Re: Waterproof electrical penetrations

Postby les45 » Tue Mar 14, 2017 2:36 am

I ran mine in clear silicone tubing. Drilled the holes tight so the soft tubing essentially sealed itself by the force fit. In this pic, one tube carries the two battery leads and the other carries the four wire trailer lighting harness. Drove through a lot of rain with this and no leaks or problems of any kind.
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Inside the cabin, the systems split and run under the edge of the mattress on each side in Wiremold conduit to the rear galley area. Battery wires went to PD4045 in galley cabinet. Trailer wires went to front and rear lights with dedicated ground wire to each light. Terminal blocks were used for distribution of each system and to make it easier for future work or repair (note - wire nuts were temporary and replaced with crimped spade connectors for permanent wiring).
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Wiring is hidden under bottom shelf in front bottom bevel area. Two piece shelf with thumb holes near center can be easily lifted out for easy access to wiring.
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Re: Waterproof electrical penetrations

Postby Dale M. » Tue Mar 14, 2017 8:28 am

RTV... Room Temperature Vulcanizing silicone rubber....

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Only get clear....

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Re: Waterproof electrical penetrations

Postby noseoil » Tue Mar 14, 2017 8:29 am

Cable glands.

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Re: Waterproof electrical penetrations

Postby swoody126 » Tue Mar 14, 2017 9:31 pm

goto your local auto parts store

they carry crimp connectors that have heat shrink and a temperatire sensitive glue in them

only slightly more $ than the regular ones

my boat trailer was wired w/ them and it gets dunked in salt water regularly and they have lasted over 5 years so far...

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Re: Waterproof electrical penetrations

Postby El_Ducko » Sat Mar 18, 2017 7:06 pm

Thanks for the input but I think I am going to use a liquid tight connector. https://www.lowes.com/pd/Southwire-3-4- ... or/3615578
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