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Old 11-22-2015, 11:37 PM   #11
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Most trailers have two lines (and two fuses/breakers) coming off the battery. One goes to the house and the other goes to the breakaway and to the jack.

If the jack goes up but not down (or the other way around) it is probably the switch or a wire connected (or disconnected) to the switch.
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Old 11-23-2015, 01:54 PM   #12
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Power jack is fixed. Thanks to all that replied. It was my 30 amp fuse.
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Old 11-23-2015, 02:31 PM   #13
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Yeah, they'll blow if you hold the switch for about 2 milliseconds after the post reaches it's limit of travel up or down. Glad you found it.
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Old 11-23-2015, 02:35 PM   #14
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OOPS. Didn't read far enough.
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Old 11-23-2015, 02:41 PM   #15
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Quote:
Originally Posted by 314BHDS View Post
I believe the also powers smoke detectors in the trailer also.Some people pull that fuse if they cant charge up the battery or the detectors will kill the battery.I had a similar situation as what you are saying.I opened up the battery box and it was full of water and the fuse and wire were corroded to all hell.I replaced fuse and cleaned up all the wires and drilled holes so the battery box doesn't fill up again and its been problem free since
The jack fuse protects the jack. No more. No less.

The smoke detectors have their own internal batteries.

The CO & Propane detector will kill the coach battery in a month or so if it is not plugged in or on solar panels.
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Old 11-23-2015, 02:44 PM   #16
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Had same problem. If you extend past the limits up or down it will blow fuse.
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Old 11-23-2015, 02:51 PM   #17
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Had same problem. If you extend past the limits up or down it will blow fuse.
You have to listen to the motor really carefully. When the whining/grinding starts to go lower in pitch, let go of the switch immediately!

You've got .000000000001 of a second from the time the motor locks up until the fuse blows.

But your got close to 1/4 of a second from when the post encounters its stop until the motor locks.
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Old 11-23-2015, 03:15 PM   #18
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The CO & Propane detector will kill the coach battery in a month or so if it is not plugged in or on solar panels.
I installed an inline battery disconnect switch on my rig. When I park it after a trip, I disconnect the battery and then nothing can drain it down.

Also note that in the newer Jaycos, the entertainment system is powered all the time, too. So that is an added parasitic draw on the battery when disconnected from your TV or shore power.

I highly recommend a disconnect switch!
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