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Old 06-17-2016, 10:21 AM   #11
Senior Member
Join Date: May 2012
Location: Sebastian FL
Posts: 195
Originally Posted by Frankp877 View Post
I've done the same thing with my jack and for the life of me I can't find the fuse. Is it inside the camper or out on the tongue? There's a wire look that runs along the tongue then into the camper. Could it be in there?
In my case the jack is wired directly to the battery and has an In-line fuse holder between the battery and the jack. There is a second wire to a different type of fuse on the power to the trailer. There was no negative wire as the jack grounds to the trailer frame. Initially, I thought that the ground might have been poor and added a wire from one of the jack bolts to the battery negative. I figured it could not hurt anything and there would be less voltage drop.

If the jack is wired from the inside of the trailer, your issue could very well be that there is too much of a voltage drop to operate the jack when the battery is on the low side.


John & Nancy
Jay Feather 25Z 2007
Ford F-150 XLT 5.4 Triton 2008
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Old 06-18-2017, 02:38 PM   #12
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Join Date: Jun 2016
Location: Shelton
Posts: 10
2015 Jayco travel trail: cannot lower back jacks, front ones are working but not the back. Help!!!!

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Old 06-18-2017, 06:05 PM   #13
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Join Date: Jun 2012
Location: Long Island, NY
Posts: 627
When my tongue jack stopped working it was the switch. The switch itself has some corrosion on the contacts and this caused a condition where power was present at the jack but it would not work. A new switch fixed it right up. I now keep a bucket upside down over the jack to keep the weather off it while not in use.

TV = 2006 F-350 CC DRW 6.0
TT = 2018 Wildwood 31KQBTS
TT = 2007 Jayco Jay Flight 27bh - SOLD
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Old 06-18-2017, 10:34 PM   #14
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Join Date: Jun 2016
Location: Shelton
Posts: 10
Thank you! Will try that.

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