Those 7 pole RV Plugs n Connectors have a terminal labeled AUX that can be used to keep the trailer battery charged via the tow vehicles alternator while driving. Id use a 20 or 30 amp circuit breaker, depending upon wire sizes (Id likely run 10 gauge to the rear and use a 30 amp breaker), to protect that feed wire fuzed close to the tow vehicles battery, of course. When you disconenct the trailers plug youre disconencted from the tow vehicle (and its battery) of course which should suffice but if you want additional protection for the trailer battery you can install a disconenct right at its + terminal. You can disconenct the trailer plug from the truck when using the wench to prevent discharging the truck battery and/or plug back in n let the truck run to recharge the trailer battery, teh 30 amp breaker will provide some protection.
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Today's Featured Article - Good As New - by Bill Goodwin. In the summer of 1995, my father, Russ Goodwin, and I acquired the 1945 Farmall B that my grandfather used as an overseer on a farm in Waynesboro, Georgia. After my grandfather�s death in 1955, J.P. Rollins, son of the landowner, used the tractor. In the winter 1985, while in his possession the engine block cracked and was unrepairable. He had told my father
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