More than likely you had a bad ground between the swing hitch and the battery ground. By installing a ground bonding strap between those two hitch parts and you will not have that problem again. At the moment you are relying on pivot points of the swing away hitch to give you a ground which at times goes bad thereby losing your jack. By your picture it shows that your ground attachment is right near the jack. I had the same problem years ago and by installing a bonding strap never had it again.
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Hans & Riet
TV 2017 Jeep Grand Cherokee, 6200 lbs tow capacity, 620 lbs tong weight, V6-3.6 liter gas with factory tow package, Prodigie3 Brake Control, Anderson "No-Sway" Weight Distributing Hitch.
TM 2720, 2011, A/C, Awning, Swingtongue, 40 Gal fresh water, Stove and Sink Cupboards, Radio/CD Player, TV ant., Microwave Oven, Electric Tongue Jack, Black Windows and Frame, and Woodgrain Vinyl Flooring
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