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Old 06-11-2018, 06:46 AM   #1
kr1975
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Electrical issue

We have a Keystone Laredo 29RL 5th wheel. We accidentally hooked the battery up backwards this weekend. Some of the overhead lights worked , but little else. Didn't realize that the battery was hooked up backwards until later in the day after we had hooked up and started the generator (via the shore cord) to try to charge the battery.
I see in other threads that there is a built in reverse polarity protection and have changed the 2-40amp fuses as suggested - they were both blown. Fridge / lights / water pump/ furnace are all now working but the wall plugs / radio and TV in the rear of the trailer are not. Have checked all the other fuses in the panel and they are all OK. Any suggestions as to what to check next?
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Old 06-11-2018, 06:52 AM   #2
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Wall plugs are 120VAC.....you might want to like in your breaker panel for a tripped 120 volt breaker
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Old 06-11-2018, 06:55 AM   #3
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None of the breakers were tripped on the panel. Any other thoughts?? Thanks
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Old 06-11-2018, 07:43 AM   #4
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You connected the batteries backward and blew the fuses - 12vdc. The items you mentioned that don't work are 120vac. - 2 different things. Do you have AC connected to the trailer? Does your air conditioning work?
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Old 06-11-2018, 07:55 AM   #5
kr1975
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We never use the AC as we are in a remote area and have no power other that the 2000W generator. We had the generator hooked up after we fix the battery hook-up issue and still no action in the electrical outlets / radio. Everything else seems to work.
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Old 06-11-2018, 08:05 AM   #6
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Look at all of the outlets and find the GFCI and reset it. Should remedy the problem
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Old 06-11-2018, 08:13 AM   #7
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One thing that helps with others giving advice. Tell us everything you have checked already and saves you time printing I already checked that.
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Old 06-11-2018, 02:12 PM   #8
kr1975
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There is nothing further to add re what we have already checked. I will keep your suggestion in mind Ken/Claudia when asking for help in the future. I appreciate your input.

I will try the GFIC reset and check the in line fuse for the radio when we go back up to the trailer next weekend. So thank you in the meantime for all your kind help and responses! Will update the post when I have tried these things! .
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Old 06-11-2018, 02:54 PM   #9
ctbruce
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You will need the generator running for the GFCI to reset. Also, did you bring your battery home with you to charge it? It shouldn't stay discharged for long periods.
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Old 06-11-2018, 09:29 PM   #10
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Quote:
Originally Posted by sourdough View Post
You connected the batteries backward and blew the fuses - 12vdc. The items you mentioned that don't work are 120vac. - 2 different things. Do you have AC connected to the trailer? Does your air conditioning work?

Not the Air Conditioner, AC, like Alternating Current, also known as 120 volts AC electric, as the things not working run on 120 volts AC, not battery voltage, 12 volts DC.
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Old 06-12-2018, 09:01 AM   #11
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Sounds like the GFI to me, hopefully that will be the fix. If not, recheck your circuit breakers inside your 120VAC load center. They may visibly look like they're all "ON", but sometimes when they trip, the handle doesn't move to the middle position. Physically turn them all off and then back on again (cycle them).
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Old 07-01-2018, 01:24 PM   #12
kr1975
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Problem solved!!!

Thanks everyone for your suggestions to try - yes it was the GFI switch and it was the inline fuse on the radio! Everything is now up and running!!

Your input was mush appreciated!
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