The factory "bumper rack" is actually bolted with a bracket that wraps the frame in front of the bumper. It appears RV bumpers are relatively thin sheet metal poorly welded with minimal reinforcement to the frame rails. There is a reinforcing bracket you can buy that bolts through the frame (plan on drilling) and goes down and hooks under the bumper. Many swear by these. Available on Amazon for a fair price. They are discussed at length in the bicycle carrier threads. Sorry, can't remember the brand name right now. Will edit it in later.
The AC electric water heater switch is the outside one.it used a constant 1245 watts when I measured it with a Kill-A-Watt meter, that's a fraction over 10 amps so be mindful of what else you are trying to power at the same time. I figure I can use the water heater, the AC, and the fridge at one time BUT NOTHING ELSE at the same time.
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2019 Cherokee Wolf Pup 16BHS flipped axle, 5K springs, 400AH LiFePO4, 3K inverter, 400 watts CIGS solar
2019 Ford F-150 S-Crew 5.5 bed V8 w/tow package, ITBC, Tow Mirrors, 3.55, SumoSprings, 7000# GVWR, 1990#CC
Husky Centerline TS WDH 400-600# spring bars
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