7 pin on a hybrid - power with flexbed pigtails?

[mightymuskrat]

I'm building a teardrop trailer, and I'd like to be able to charge the battery while I'm driving. If I added a 7-pin and just ran it with the four wires for lights, would adding power from the flexbed pigtails to the power pin be enough, or should I run a new wire from the battery with a fuse? Doesn't need to do anything more than charge the battery or keep it charged so I can have a full battery and run on solar for a week or so.

Would like to know if something like this has been done, the search didn't bring anything up for me.

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[Hot Runr Guy]

While certainly doable, I wonder how you keep the trailer battery from being over-charged? I wonder if some type of dc to dc charger that could monitor the state of charge of the trailer battery would be smart to include?

Something like this, maybe? https://www.renogy.com/12v-20a-dc-to-dc-on-board-battery-charger/

HRG

 

[fossil]

use a battery isolater and you'll be good

 

[SkeeterB]

12 volt from pigtail runs my compressor very slow and useless. 12 volt at dash works well. Too far a run and a dinky little half assed wire to the back. Cost savings for Ford. Good advertising and bad performance.

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