Best 4 PIN thru-deck electric connection for mast?

Sep 30, 2025
173
Catalina 22 Davis Hollow - Lake Arthur
I've looked at tons of them after ordering the plastic one from C.D. cause that's all they had at the time. Just doesn't do it for me.... and having a hard time finding one that seems like it will actually work and last. Don't really care how it looks and have no real size restrictions.

Going on a c22 with a 4/16 wire run.

I'm open to diy options as well, doesn't need to me a manufactured specific part.
 
Sep 30, 2025
173
Catalina 22 Davis Hollow - Lake Arthur
Mar 6, 2008
1,490
Catalina 1999 C36 MKII #1787 Coyote Point Marina, CA.
There is a rubber washer included that you can place on the deck then screw down the lower part with female pins. The rubber washer makes the base water proof. It is visible in the image above. When you unplug the male part, then use the cap that is secured with a chain to cover the deck portion opening to prevent water intrusion The male portion with polarized pins fits only one way is screwed on from the top and it too is water proof. This male and female 4 pin plug is made out of metal.
1000001036.jpg


I use this plug to connect a wired remote switch to control the windlass motor from the cockpit.
 
Last edited:
Oct 13, 2020
200
catalina C-22 4980 channel islands CA
This is great connector, but be careful not to strip out the very small phillips head screws that hold the wires in place. Also be careful not to drop the screws, after one bounce they will disappear into another dimension making them hard to find! Dano
 
Feb 6, 1998
11,757
Canadian Sailcraft 36T Casco Bay, ME
I prefer Deutsch DTP. You just need the right crimp tool.

Deck Side - DTP04-4P-L012

Mast Side - DTP06-4S-E003
 
Sep 24, 2018
4,448
Catalina 30 MKIII Chicago
You might also be able to buy the DTP connectors with pigtails attached. Quality will vary as there are a lot of Chinese vendors making knockoffs
 
Sep 30, 2025
173
Catalina 22 Davis Hollow - Lake Arthur
There is a rubber washer included that you can place on the deck then screw down the lower part with female pins. The rubber washer makes the base water proof. It is visible in the image above. When you unplug the male part, then use the cap that is secured with a chain to cover the deck portion opening to prevent water intrusion The male portion with polarized pins fits only one way is screwed on from the top and it too is water proof. This male and female 4 pin plug is made out of metal.

I use this plug to connect a wired remote switch to control the windlass motor from the cockpit.
Appreciate the break down. I think that will work well. One thing, can you explain what the "female pins" are?
 

JBP-PA

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Apr 29, 2022
782
Jeanneau Tonic 23 Erie, PA
How do you like it. [Wish west marine would have more photos on their products.] Hard to tell from just one photos on there.

Do you epoxy the walls of the hole for it to seal the deck?
You should always seal the hole in your deck with epoxy if it is cored with balsa. Every rubber gasket/goop will eventually leak.

I stongly dislike that Sea Dog and the Sea Dog look alike connector, and yet that is what I currently use. The tiny screws are a pain, strip easily, tends to leak, and corrode quickly (and I'm in fresh water). I have an aircraft type connector, but it is more difficult to install and I keep putting it off.
Looking forward to anyone who has a better alternative.
 
Sep 30, 2025
173
Catalina 22 Davis Hollow - Lake Arthur
The female pins are actually receivers for the male pins - but you knew that!
I figured so much...just haven't seen those on these connectors before so trying to picture them on this setup. Sorry I guess I'm very detail oriented when it comes to stuff like this.
 
Sep 30, 2025
173
Catalina 22 Davis Hollow - Lake Arthur
You should always seal the hole in your deck with epoxy if it is cored with balsa. Every rubber gasket/goop will eventually leak.

I stongly dislike that Sea Dog and the Sea Dog look alike connector, and yet that is what I currently use. The tiny screws are a pain, strip easily, tends to leak, and corrode quickly (and I'm in fresh water). I have an aircraft type connector, but it is more difficult to install and I keep putting it off.
Looking forward to anyone who has a better alternative.
Yeah, it was the 3 or 4 deck screws that worry me the most. Feel like there has to be a better way to secure these connectors.
 
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JBP-PA

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Apr 29, 2022
782
Jeanneau Tonic 23 Erie, PA
Yeah, it was the 3 or 4 deck screws that worry me the most. Feel like there has to be a better way to secure these connectors.
I fill the whole area with epoxy out past the screw holes. I don't cut it all out, but use the bent nail trick to remove the core.