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05-23-2022, 01:51 PM
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#1
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Junior Member
Join Date: Apr 2015
Location: Winston, Or.
Posts: 13
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12V power
I have a 2022 Montana HC. When I’m plugged into 110V with the shoreline everything works. If I’m not plugged in, I get nothing on 12V. Anything that works off of 12V doesn’t work. What could be the problem?
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05-23-2022, 02:03 PM
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#2
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Site Team
Join Date: Feb 2014
Location: W. Texas
Posts: 17,692
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Have you got a battery disconnect switch in the convenience center? See if it's not off. On a 22 I doubt the batteries are toast but you need to check them. What's the water level?
__________________
Danny and Susan, wife of 56 years
2019 Ram 3500 Laramie CC SWB SB 6.4 4x4 4.10
2020 Montana High Country 331RL
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05-23-2022, 02:04 PM
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#3
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,349
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If you have a battery disconnect it’s in the wrong position. If you don’t have one, then start by testing the battery for 12V. If it’s good then follow the positive lead looking for any resettable circuit breakers.
If your battery is dead, then we need to test the converter output.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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05-23-2022, 07:27 PM
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#4
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Senior Member
Join Date: Sep 2020
Location: Leon, WV
Posts: 469
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Check the Brock Box which is most likely mounted just above and behind your battery box.
__________________
2022 Cougar Half Ton 24RDS
2017 F350 DRW 6.7L
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05-23-2022, 10:28 PM
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#5
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Senior Member
Join Date: Mar 2019
Location: Milwaukie, OR
Posts: 1,398
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So, ALL 12v systems are working when plugged in to shore power, but not when unplugged? That sounds like batteries to me. If the 12v disconnect were in the off position then many 12v systems wouldn't work plugged in or not.
__________________
Jeff & Sandi (and Teddy - 7lb Schnorkie)
2018 Montana High Country 305RL
2015 RAM 3500 Crew Cab 4x4 DRW
Demco Recon Hitch on RAM Puck Ball
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05-24-2022, 02:19 AM
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#6
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,349
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Quote:
Originally Posted by jsb5717
So, ALL 12v systems are working when plugged in to shore power, but not when unplugged? That sounds like batteries to me. If the 12v disconnect were in the off position then many 12v systems wouldn't work plugged in or not.
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Since the converter supplies 12V power to the fuse panel and charges the battery, being plugged into shore power will “energize” the converter and it will power the 12V stuff. Won’t charge the battery and shouldn’t be the only power source to operate slides.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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05-31-2022, 01:29 AM
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#7
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Junior Member
Join Date: Feb 2022
Location: Wake Forest
Posts: 1
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Quote:
Originally Posted by jsb5717
So, ALL 12v systems are working when plugged in to shore power, but not when unplugged? That sounds like batteries to me. If the 12v disconnect were in the off position then many 12v systems wouldn't work plugged in or not.
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I also have a 2022 Montana HC and if I am connected to shore power all my systems work even if I have the 12V disconnect in the off position. The issue sounds like a battery issue.
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05-31-2022, 05:06 AM
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#8
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Senior Member
Join Date: Mar 2014
Location: Las Cruces
Posts: 4,665
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As mentioned, check the batteries. I once had a customer call me after a sale and they couldn’t get the generator started on their brand new Fuzion. The tech that installed the battery never connected the battery cable. Why they didn’t check the gen during orientation also baffled me. A bigger concern, if your batteries are not working or not connected properly, your break away will also not work since the on board battery is also what powers the brakes if the trailer comes disconnected.
__________________
Brent
2013 Alpine 3500RE
2019 Silverado 2500HD Duramax
U.S. Air Force Retired (25 yrs)
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