I bought one of these, https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 and installed it into the battery lid along with a disconnect switch. That way when I turn the battery on I know what the voltage is and whether or not I need to plug in to the truck to raise the jack. This works for me as we don't dry camp.
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Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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