Originally Posted by Brian B-P
Yes, it is set up so you unplug the trailer from the tug and plug the jack in instead. I suppose the logic is that you only run the jack when unhitching or hitching up, and installation with no wiring work is appealing.
As an alternative, the 7-pin plug on the jack's cord could be changed to a 7-pin socket, to plug into the trailer's cable so the jack would run from the trailer's battery.
I would rather wire the jack to the trailer, so it can use the trailer's battery when the trailer is unplugged, and power from the tug when the trailer is plugged into the tug.
This looks like an advantage to people like me. Against Dennis' advice we are going with the manual jack thinking we could go power later if needed. Then I learned I think from you, Brian, that #10 wire needs to be pre-wired on the trailer if you want to install an after market power jack at a later date. Looks like this arrangement would let me use the TV as the power source. Too late for the wiring. Our 21 has moved on to Quality Control. July 11 pickup date.
We did get the Jack E-UP to install on the manual jack if needed for tailgate clearance. Looks like it would work on this unit as well.