Power tongue jack question

edit... -jinx- :)

ditto the above post

12rvjoe wrote:
Our trailer is in storage now and I would like to lower the front a little to help the snow and water run off easier. My question is if I hook up the 7 pin from my truck to the trailer will it power the jack, the trailer battery is removed. Also does anyone know the socket size needed to lower it manually ...

Thanks,Joe

Careful - a tongue jack can pull 20-30A under load. This is more current than the 12V vehicle-trailer wiring can handle. Obviously this shouldn't be an issue since you're LOWERING the tongue, but it could be if you overshoot or decide to adjust it back upwards.

Might it be easier to simply pull out the manual crank for the jack and not bother with the motor, if you're only dropping it a few inches?

Depends how your jack is wired. Some are wired off the battery, and if the battery is missing then obviously it is disco'd. Some are wired internaly then your 7 pin would be ok.

Although even with the battery missing, and the jack wiring is there you can jumper the the battery leads coming out of the trailer to the jack leads then plug your 7 pin in.

Basically you can make it work very easily either way.