Our 2012 Dodge Ram had #14 wires going to the 7 pin plug from the built in broke controller.
We installed a new trailer charge wire directly from the truck battery with #10 wire going through a auto reset 30 amp breaker on the firewall to the 7 pin plug on the back of the truck, discarding and securing the factory wire. We added another #10 wire with it's own breaker directly into the Tuson DirecLink NE brake controller from the truck battery and from the brake signal output of the controller continued to the 7 pin plug with #10 wire removing and securing the factory wiring.
The larger amperage capacity wiring provides more than adequate power to the hydraulic disk brake pump and well as the brake pump control circuit.
WBCCI Life Member 5123, AIR 70341, 4CU, WD9EMC
TV - 2012 Dodge 2500 4x4 Cummins HO, automatic, Centramatics, Kelderman level ride airbag suspension, bed shell
2014 31' Classic model 30 twin beds, 50 amp service, 900 watt solar system, Centramatics, Dill TPMS, disc brakes, 16" tires & wheels