Power jack operation
The power jack isunder a very heavy load and requires all the good 12 dc voltage possible. If the batteries that supply voltage to the jack are down in voltage just a bit, the jack may be destroyed.
Low voltage yeilds hi amps. Hi amps is lots of heat. Hi heat eats wires.
Yep, just one slow heavy lift. A few RV people have made some wiring changes that allows the tow vehicle to power the jack and do so with the engine running. All electrical devices require 2 conductors, like the ying and yang of things. In many cases the trailer frame is the ground connection. This is not the best method, but it is quick and cheap. Good repair price for power jack motor...$110...
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