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Old 02-05-2009, 12:10 PM   #1
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Location: Central california
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Hi guys and gals, I'm having a problem with my 78 southwind m/h. Just replaced the house battery, and now my 12 volt interior lights won't work. I can start the generator, and they work. Don't know if I shorted something out, blew a fuse or something isn't connected. Would appreciate any help on where to look, what to look for, etc. I'm new here, and have been enjoying the forums, and learning a lot of stuff. Thanks again, Camperjer...

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Old 02-05-2009, 12:30 PM   #2
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In my experience with 12 volt systems, it's usually I who made the mistake(i,e. clipped a wire from the harness, blew a fuse , etc.) It's odd that when you crank the gen, your system works, though. Was it a good battery that you put in?
I've swapped sides , after having been a boater for 30 years........this is my first experience with rvs. I've always found 12 volt fairly simple and forgiving(and unless you're knee deep in water, holding a wire in your mouth, you prolly won't get zapped.)
I'd suggest there's a hot-side lead you may have missed, as it all works when run through the inverter.
I have a similar problem; but, mine is that exactly half of my interior lights work, and the aft half doesn't. They worked fine the day I wrote the check , though. I'm thinking this may be a fuse.


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Old 02-05-2009, 12:40 PM   #3
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Welcome Camperjer to irv2 and not just being a guest.
Your lights are working from the converter via your generator and a shore line I would guess.
The house battery must have a fuse off it some where could be near fuse panel for 12v systems near converter or a fuse link off battery.
Also with meter check the fuse panel with battery leads and see if you are receiving 12v's from battery, make sure batt leads are not reversed.
Others will pop in here that may own your coach.
Enjoy the forums and do post often.
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Old 02-05-2009, 11:24 PM   #4
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Camperjer, welcome to iRV2.com. We are glad too have you join us here and we look forward to reading of your adventures and experiences.
Be sure to check the fuses in the 12 volt distribution/converter and/or the battery charger. Also make sure you did not leave a wire off of the battery bank. Good luck and keep us posted.
Mike, RVIA & RVSA Certified Master RV Technician
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