Charging Camper/Coach Battery with Running Lights Lead from Flat-4

I prefer to use the Hopkins (#47185) 4 way to 7 way plug. I installed one on my Suburban back in 2005 and ran it for almost 15 years. I like it because it plugs into the existing 4 way flat plug to convert the lights to a 7 way. You then only have to run a brake wire from your brake controller under the dash to the plug at the bumper. The best part of the connector is that it also retains the 4 way flat so you can tow a utility trailer without using an adapter.

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