What is this 20amp 4pin for? - Page 2 - Fiberglass RV

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Old 04-16-2014, 11:21 AM   #15
Gina D.'s Avatar
Name: Gina D.
Trailer: '77 Leocraft 17 & Former Burro owner and fan!
West Coast USA
Posts: 9,010
and btw, that connector is not a "solar" unique connector. It's a 4 pin towing light connector. I chose to use one because of the current capability, the durability, and of course the easy of mounting for my situation. The lid helps too.

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Old 04-16-2014, 11:24 AM   #16
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Name: Bob
Trailer: 1973 Hunter Compact II
Posts: 7,914
If it's wired to the inverter it would be a 120VAC connector for a custom made extension cord, with the matching plug at one end and a std 15/20 amp cap at the other.

I would "suspect" that the P.O. used that odd-ball method of connecting to indicate that it was connected to the inverter


Same answer if it's connected to the "Converter", except for 12 VDC.

Best bet... get out the volt meter and find out what's on the pins. And shame on the dealer for not having a better answer.

BTW: That's a standard connector and matching plugs are easy to find. I think that they are also used as a trail light connector instead of a flat 4 connector.

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Old 04-17-2014, 09:10 PM   #17
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Name: Dan
Trailer: Scamp
Posts: 544
Might this be a spare battery connector for extra run time on the inverter?

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Old 04-18-2014, 05:06 AM   #18
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Name: bob
Trailer: 1984 u-haul ct13; 1996 Casita 17 Spirit Deluxe; 1946 Modernistic teardrop
New York
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I used one of those to connect a battery charger to my battery before I got a new power converter. That way I didn't have to get under the bed mattress and open up the battery box to hook up the charger. Mine is mounted inside the trailer. Used 2 pins of the male plug with short leads on it to hook my charger to.

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