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Old 05-27-2014, 03:09 PM   #1
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Question No 12 Volt Power

We have a 2013 Wildcat 5ver, and after a weekend of dry camping, we no longer have 12 volt power. Once we are on shore power everthing works fine. Had the batteries checked and they are fine. The slides and landing gear work as they tied directly to the batteries. Checked the fusable links near the batteries and they are fine.

Any Ideas??
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Old 05-27-2014, 03:28 PM   #2
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Did you check the current limiter near the metal box the umbilical goes into? There is a reset button on the side.
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Old 05-27-2014, 03:33 PM   #3
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I will go check that now. Just to clarify, is that near the batteries or at the back where the big power cord goes in?
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Old 05-27-2014, 03:38 PM   #4
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Near the battery - usually along the frame/under the front for a tt or in the pass through on a 5th wheel. Follow the positive wire back from the battery and you should it / them.
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Old 05-27-2014, 03:46 PM   #5
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Do you have a battery disconnect switch? Those have a mysterious way of changing.
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Old 05-27-2014, 03:47 PM   #6
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There is also one near the metal box the long cord goes into. (as pictured).

There is another one near the battery itself.
Either one tripped can cause your problem.

The one near the metal box is in the circuit to protect the camper from a short in the umbilical (like severing it in a turn). The one near the battery is to protect the camper from a dead short at the battery with the AC power driving the converter.

If the battery alone will run your landing gear or main slides but nothing else, the problem is at the umbilical. If the battery alone will run nothing, it is the one near the battery.

The red wire in this photo that goes off the plywood to the right goes to the next current limiter at the umbilical (5th wheel is up under the pin box); then to the converter.
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Old 05-27-2014, 04:04 PM   #7
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That was it!!! If you are ever in Colorado sir, I owe you a six pack (or a Case) of whatever beer you drink! You have saved
me a trip to the service center.
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Old 05-27-2014, 04:06 PM   #8
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Quote:
Originally Posted by JM Wildcat View Post
That was it!!! If you are ever in Colorado sir, I owe you a six pack (or a Case) of whatever beer you drink! You have saved
me a trip to the service center.
Glad I could help!
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Old 09-11-2017, 01:50 PM   #9
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Exact Same Issue but on Forester Class C!

I have no 12 volt power in my Class C whatsoever, but everything works great on either shore power or generator power. Have checked every known fuse and switch, including in the BCM next to the batteries. Both batteries test good at 13+ volts even when disconnected from the coach and from each other. Checked voltage at the incoming cables to the back of the battery cutoff switch and there is zero voltage there. There is undoubtedly a fusible link or fuse, or reset of some kind that I am missing somewhere - just have to figure out where it is. Any help appreciated!
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Old 09-11-2017, 01:55 PM   #10
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Quote:
Originally Posted by Jperry View Post
I have no 12 volt power in my Class C whatsoever, but everything works great on either shore power or generator power. Have checked every known fuse and switch, including in the BCM next to the batteries. Both batteries test good at 13+ volts even when disconnected from the coach and from each other. Checked voltage at the incoming cables to the back of the battery cutoff switch and there is zero voltage there. There is undoubtedly a fusible link or fuse, or reset of some kind that I am missing somewhere - just have to figure out where it is. Any help appreciated!
13+ volts on the battery means that they are getting charging voltage, so "no 12 volt power" is confusing to me. Could you be more specific?
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