I use the husky sway control friction system. It works fine. It's not expensive. Make sure you get both left and right side installed simultaneously. You'll be good to go and it won't cost much. I've traveled to Sequoia, Yosemite, Phoenix, Grand Canyon, Arches, Teton, Yellowstone, Devil's Tower, Mt. Rushmore & Glacier, literally over 10,000 miles with that system. It's cheap and it works. PERIOD.
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4 6-volt batteries - 440 AH bank
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