GMACFARLANE Posted September 20, 2021 Report Share Posted September 20, 2021 Hi all, this may have been covered but I could not find a quick answer using the search option. I just got a 2017 Edge with the 4 pin flat light connector. While my trailer is small (1300 Trillium) I don't need a brake controller but would like to charge my trailer battery while driving. Is there a simple way using existing wiring or should I get a 7 pin connector and run a separate line from the battery? Thanks! Quote Link to comment Share on other sites More sharing options...
dajo2012 Posted September 20, 2021 Report Share Posted September 20, 2021 https://www.etrailer.com/faq-charge-trailer-battery-while-driving.aspx 1 Quote Link to comment Share on other sites More sharing options...
GMACFARLANE Posted September 22, 2021 Author Report Share Posted September 22, 2021 Thanks for the link but I seriously wonder that I need a $1300 adapter to charge my battery. My F150 does a fine job with the 7 pin connector and nothing else, Quote Link to comment Share on other sites More sharing options...
enigma-2 Posted September 25, 2021 Report Share Posted September 25, 2021 https://www.etrailer.com/question-218041.html Quote Link to comment Share on other sites More sharing options...
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