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Old 06-02-2015, 05:34 PM   #1
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Blown 30a fuse

Picked up new 22' Jayfeather.dealer Tech showed me all about it and hitched it up. Drove about 1 1/2 hours home. Unhooked power cable from car and tried to use power tongue lift. Nothing. Pluged cable back into car plug and unhitched. Disconnected plug and found nothing inside working off battery. Did some checking and found the 30a fuse at the trailer battery blown. Any thoughts why?
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Old 06-02-2015, 05:52 PM   #2
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Not finding any when you checked it over, may a bad fuse. Try another one. If it blows again, take it back to the dealer to fix it.
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Old 06-02-2015, 05:56 PM   #3
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could be any number of reasons.
Was the fuse good before you picked up the new RV. was the battery connected properly. Could also be that the fuse blew when you tried to use the power jack and just have been a fluke that it blew. Have you replaced the fuse and tried using the jack again?
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Old 06-02-2015, 06:03 PM   #4
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Have not replaced fuse. What is the best sequence to unhook trailer. Shut off car engine. Pull plug cable from car. Raise vehicle with power lift. Remove sway bar and rods. Lower back down. Unlatch ball latch. Raise trailer off ball.???
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Old 06-02-2015, 06:19 PM   #5
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Check you battery connections. Make sure the white whire is connected to ground. Replace the fuse. Then check to see if you have 12V power in the RV. Then try the jack if fuse blows again I would then call the dealer and let him know.


That's how I do mine except for the power jack which I don't have. I find it easier to remove the equalizer bars buy raising the hitch. then lower it to release the ball. Lately I have been using a hydraulic Jack rather the hand cranking the tongue jack.
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Old 06-02-2015, 06:44 PM   #6
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There's only a power wire to the power jack. With a poor ground you blow the fuse in the batt. box. I installed a #10 ground directly to the PJ's drive motor. Also there is a fuse for the brakes in he batt. box. The power to the converter has a circuit breaker usual outside the batt. box and also has a regular and reverse fuse at the converter.
You can plug or unplug your unit with or without the engine running.
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Old 06-02-2015, 07:14 PM   #7
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I leave trailer/tv plugged in while unhooking. It provides extra power to t/t battery. If you raise or lower jack past certain levels, it will blow that 30a fuse. Place a four to six inch block under jack foot to use less of jack. Last things I unhook are safety chains, break away cable, then power chord. T/t's have been known to move while unhooking.
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Old 06-02-2015, 07:27 PM   #8
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same thing happened to me, replaced the fuse, hit the electric tongue button and it popped again, replaced that one and all was well. 2015 Jayco 23RB. I will be keeping a surplus of fuses on hand.
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Old 06-02-2015, 07:38 PM   #9
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Same thing happened to me with our jack. I found that if you go just a little too far past the hard stops of the tongue jack for just a split second, the extra tax on the motor causes the fuse to blow. Now I have a mark at the retracted position that I watch so I know when to let the switch go before hitting the hard stop.

The good news is that the first thing I did when I picked up the new trailer was go through the fuse panel and buy a pile of spares.

Quote:
Originally Posted by arkhillbilly View Post
I leave trailer/tv plugged in while unhooking. It provides extra power to t/t battery. If you raise or lower jack past certain levels, it will blow that 30a fuse. Place a four to six inch block under jack foot to use less of jack. Last things I unhook are safety chains, break away cable, then power chord. T/t's have been known to move while unhooking.
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Old 06-02-2015, 08:33 PM   #10
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Like Swardy said. If you run the jack up too far or out too far it will trip the fuse.
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