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Old 06-26-2011, 11:44 AM   #1
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Battery power question

We recently bought a 2007 Jayco Feather 19H. When I plug power in everything works inside the camper. When I unplug the cord nothing works.

The battery reads good. Is there something I need to do to switch to battery power? There's a switch to turn on the power with a cord when I first enter the camper (along with a switch that powers the outside light and the meters for the tanks). I assume when it's off and the electric cord doesn't work that it's running off battery power but no lights work.

Any ideas? The manual is worthless.
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Old 06-26-2011, 11:48 AM   #2
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Have you checked all your breakers/fuses? Including the one that's likely located near or in the battery compartment? I have a main 30A fuse between the battery and the line running into the camper.
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Old 06-26-2011, 11:52 AM   #3
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Originally Posted by jbwjbw View Post
Have you checked all your breakers/fuses? Including the one that's likely located near or in the battery compartment? I have a main 30A fuse between the battery and the line running into the camper.
I pulled it out and it looked OK
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Old 06-26-2011, 11:53 AM   #4
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Also check for corrosion on all the battery connections and the exterior fuse. I recently had a problem where everything looked good, fuse was good - but the fuse blades were actually bad enough it was killing the power. Upon further inspection after removing the fuse, it had actually melted a little from the heat caused by the extra resistance. I have since replaced all the wires and fuse holder with marine grade waterproof stuff....
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Old 06-26-2011, 11:56 AM   #5
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Originally Posted by Snake Plissken View Post
I pulled it out and it looked OK
There are usually three fuses to check - the one by the battery - and the two reverse polarity fuses in the load center. If it were me, I would remove them completely and check them.

Also - do you have a multimeter? You can just start to work your way backwards - checking the battery, then the battery + and the frame to see if your ground is making it. Then check on the other side of the fuse hold, etc, etc. It is possible you have a cut or chewed through main battery wire going back to the load center.
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Old 06-26-2011, 12:08 PM   #6
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Quote:
Originally Posted by tafische View Post
the two reverse polarity fuses in the load center. .
Where are these 2 fuses?
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Old 06-26-2011, 12:27 PM   #7
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Quote:
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Where are these 2 fuses?
On mine it is a little black box at the power converter. It has the breakers and fuses there. There is a door that opens revealing the fuses.
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Old 06-26-2011, 08:53 PM   #8
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Quote:
Originally Posted by Snake Plissken View Post
When I plug power in everything works inside the camper. When I unplug the cord nothing works.

The battery reads good.
If when plugged in, everything works, then that eliminates everything downstream of your inverter. The issue has to be between your battery and your fuse panel.

Even though you say it reads good, I would start by checking the battery. Don't know your resources but hook up jumper cable off truck, replace temporally with truck battery… Too many times those reading are one thing but under load the truth comes out.
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Old 06-27-2011, 05:46 PM   #9
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Thanks everyone for your help. I was able to locate a break in the negative wire that I fixed and I now have battery power.
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Old 06-27-2011, 09:27 PM   #10
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Got to love a relatively easy fix! Sometimes those can be a little "fun" to chase down...
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