Battery voltage drops!!!
I have a 2015 Jayco Pinnacle with a residential fridge. When I am plugged in to shore power and have fully charged batteries (two of the biggest Trojan 6 volts that I could fit in the battery cases) m...
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Four gauge cable from truck battery to 80 amp breaker, through heater hose insulation under truck to dual pole socket on rear bumper, or near 5th wheel.
Continue on through trailer with dual four gauge to 80 amp breaker then into batteries.
This was the only way I could get my trailer batteries to charge right. Or you could go to the SURE POWER dot com home page and investigate boosting voltage to 80 and sending it through a much smaller wire. The kit ain't cheap.
A salesman will snap your arm in half trying to convince you a Manatee is Marilyn Monroe. Take a BS meter near a car or RV showroom and the sucker will grow legs and go jump in someone's lap.
