Jayco RV Owners Forum

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Old 01-06-2014, 05:39 PM   #1
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Blown fuse connected to battery

We took out our new X23B this weekend for a maiden voyage and noticed every time we attempted to engage the tongue jack on battery power the battery fuse would blow. Plugged in to 15 amp circuit it works just fine. A 20 amp fuse was originally installed by Jayco. We replaced it with another 20 and a 25 amp fuse, with the same result. Could this be a wiring issue or an issue with the tongue jack itself. Also, should we try 30 or 40 amp fuse?

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Old 01-06-2014, 06:56 PM   #2
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The fuse for a motor needs to be a slow blow fuse, not a regular fuse. A motor will initially draw higher current as it starts. Even with the slow blow fuse we would have a blown fuse every year or two. I would not recommend just going to a bigger fuse. A good automotive parts store should be able to supply this fuse. They are also available on line. If the slow blow fuse does not solve the problem talk to your dealer about replacing the jack.

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Old 01-06-2014, 09:21 PM   #3
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My 145RB did not have a factory installed battery.
In our case the battery was dealer installed and came from the dealer with a regular 30 amp automotive type fuse.
This is not an answer to your question, but does illustrate that not all Jayco products come with the same type of fuse from the battery.
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Old 01-07-2014, 07:20 PM   #4
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mine does that too, mostly if i just dont let go of the switch quick enough when i is all the way up or down,
i just keep a spare pack of fuses in the trailer just incase
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Old 01-07-2014, 07:29 PM   #5
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Installing a larger fuse, just means you are going to have a larger bill down the road, when something burns up. Try the slow blow fuse, or better yet circuit breaker replacement. If it keeps having issues I would have the dealer look at it, as there may be a motor issue.
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Old 01-08-2014, 08:31 AM   #6
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Odd that it blows a fuse when on battery but not when on shore power. Would a weak battery cause this? (calling the experts!) I have no problems on battery only.

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Old 01-08-2014, 08:56 AM   #7
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Ours had a 35 amp fuse (?) that got blown when the umbilical to the truck got pinched and shorted out. I took it to the dealer and had them replace the cut cord under warranty (or because the damage occurred on their lot and wasn't inspected thoroughly before I brought it home?), but had to replace a bunch of fuses myself, including the one from the jack to the battery. Replaced it with a 30 Amp auto fuse and all is well.

I would closely inspect the cord that plugs into the TV, perhaps that's why it works fine when on Shore Power, but not when plugged into the truck or on battery?; you could have a short somewhere in the lines between truck and trailer which could cause the problem you're having along with a host of others...

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Old 01-08-2014, 03:54 PM   #8
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Those jacks are currently looked at for a possible replacement, due to the fuses blowing.. mostly when you reach the top or bottom of travel. I will try to do bit of research tomorrow and see if it has a ETL yet.
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Old 03-27-2014, 11:53 AM   #9
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Hello folks,
My wife and I just purchased a new 26 Jayco travel trailer and experienced the same problem of blowing the 30 amp fuse between the electric jack and the battery when raising the hitch to the fullest extent of the jack. I blew four fuses before I finally called the RV dealership. If I raise the jack all the way to the top, it will blow a fuse. The dealer rep said this is a safety precaution to prevent the motor from burning up. I don't think I believe his excuse. Has anyone found any more information regarding this problem or if there is a recall on the electric motor?

At the same time, something blew the fuse on my trailer's running lights. That 20 amp fuse for the trailer's running lights is found under the hood of my 2010 Ford 150 truck. By the way, a Ford dealership charges $7.00 for each small fuse and Advanced Auto Parts charges less than $1.00. Highway robbery!!!

Any additional info on this issue would be appreciated.
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Old 03-27-2014, 01:28 PM   #10
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I found that if my trailer was ever connected to both shore power and tow vehicle power at the same time, that 30A fuse would sometimes blow. Ever since I adopted the practice of unhooking the truck connection before plugging into shore power, and removing shore power before plugging in the truck, I have not had a problem.

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