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Old 07-11-2018, 10:35 AM   #1
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No battery power to anything

Hello,

I recently purchase a used 2000 Forrest River 28 ft Salem 5th Wheel. I discovered that with both batteries fully charged the only thing that is powered is the slid out, nothing else works, no landing legs, no appliances, no lights, no outlets, nothing. The wiring looks to be in excellent condition. There is no obvious power shut off switch. I am not too comfortable with electrical systems but with the help of youtube I was able to determine (at the batteries posts) there are no amps being pulled from the trailer. I am hoping that I am just missing something simple, any suggestions?
Thank you, Danny
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Old 07-11-2018, 10:46 AM   #2
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You have two electrical systems. A 12v and a 120v. The only link is the converter and maybe an add on inverter if you have one (not likely). So lets look at 12v. You have juice to your slides. Good sign but they are on their own circuit. So now you should look at the reverse polarity fuses in your power center. Look for up to two 30-40 amp fuses. Got a multi-meter?

Edit: I am assuming that you checked diligently for a shut-off switch/battery disconnect.
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Old 07-11-2018, 10:57 AM   #3
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Many units have a battery disconnect switch that removes the battery(ies) from the circuitry so they do not get discharged by parasitic drains (clocks, radios, LP detector, etc.) when not plugged into shore power. With the disconnect in the disconnect position, you will not have 12v power to most of your rig.

Have you looked for one of these switches?

Here are some examples...

[img]http://tweetys.com/ProductImages/uncategorized/19-0659-color.jpg[/img









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Old 07-11-2018, 11:00 AM   #4
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Nice pics picker.��
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Old 07-11-2018, 11:13 AM   #5
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I agree to look for a battery disconnect. One test would be to plug in to shore power and see if the batteries charge. If they don't, they're likely disconnected from the converter.
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Old 07-11-2018, 11:29 AM   #6
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How are you charging your batteries, with the converter in the trailer or a stand alone charger?

If they are charging via the converter then the reverse polarity fuses are OK.


Need a bit more info.
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Old 07-11-2018, 11:48 AM   #7
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do the lights and other 12v items work when you are connected to 120V AC. If so the converter and reverse polarity fuses are OK.

If not either a battery disconnect switch as mentioned above or a resetable circuit breaker may be tripped, this will probably be close to the battery, generally in the positive wire.
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Old 07-11-2018, 12:01 PM   #8
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YEP, possibly the little resettable circuit breaker with the tiny black reset button.
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Old 07-11-2018, 12:32 PM   #9
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Quote:
Originally Posted by bikendan View Post
YEP, possibly the little resettable circuit breaker with the tiny black reset button.
For reference to what bikedan mentioned... note the little black push button on the end of the circuit breaker.
That is the reset button.

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Old 07-11-2018, 12:40 PM   #10
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By the way...

Quote:
Originally Posted by 5picker View Post
For reference to what bikedan mentioned... note the little black push button on the end of the circuit breaker.
That is the reset button.

By the way, the resettable circuit breaker is hidden under the trailer, usually either under the tongue, or just behind it, at the front of the trailer. You will have to crawl under the trailer to find it.

Larry
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