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10-20-2013, 07:31 AM
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#1
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Established Member
Join Date: Oct 2013
Location: Marion
Posts: 10
M.O.C. #13839
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No power from Battery to Camper
New Member who just purchased a 2002 Montana Mountaineer, not a fifth wheeler, I have a fully charged new 12 volt battery and it is correctly wired, there is 12+ volts at terminals but nothing works in camper unless I plug into ac land power then things work, I can also hear (when plugged into land power) what sounds like a fan running just under where the fuses are in the hallway so I assume this is probably generator or inverter. Any ideas what might be going on here ?
Am electrically illiterate so answers that understand that would be helpful.
Thanks,
Richard
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10-20-2013, 07:35 AM
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#2
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Montana Master
Join Date: Feb 2007
Location: Winfield
Posts: 7,327
M.O.C. #6846
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I believe the fan you are hearing is the converter, which is what charges the battery. Not sure about your model year but on later years there was a switch in the basement area that turned off the battery power to the rig. Some of our more seasoned members may know if that year model has a battery switch.
Bingo
__________________
Bingo and Cathy - Our adventures begin in the hills of WV. We are blessed by our 2014 3850FL Big Sky (previous 2011 3750FL and 2007 3400RL) that we pull with a 2007 Chevy Silverado Classic DRW CC dually.
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10-20-2013, 07:47 AM
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#3
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Montana Master
Join Date: May 2003
Location: New Bern
Posts: 4,294
M.O.C. #311
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By your statement, I am guessing your Mountineer is a tow behind trailer not a fifth wheel.
I would look for a fuse in the battery box, first.
The fan you hear is the converter (like a battery charger).
Next suggest would be to pull panels (fuse) but since you stated you are not comfortable with electrical I suggest going to a shop or have someone who is to help trouble shoot further.
You might give us your location to see if some one on the forum is close by and could do some mentoring.
Welcome to the forum.
Good luck and let us know what you find.
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10-20-2013, 07:57 AM
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#4
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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Profile says he's in Marion, NC. Do we have anyone near there?
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2017 3720 RL, and 2013 HC 343RL
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10-20-2013, 11:10 AM
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#5
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Montana Master
Join Date: Jun 2010
Location: Colorado Springs
Posts: 3,335
M.O.C. #10496
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Maybe previous owner installed a battery shutoff switch?
Also look for a shutoff switch in your service area (if you have one).
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10-20-2013, 02:02 PM
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#6
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Montana Fan
Join Date: Jan 2013
Location: Fountain Inn
Posts: 209
M.O.C. #13142
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I am in the Greenville S C area and will be glad to help. Marion is about 1-2 hours away. My battery cutoff switch is in the service area.
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10-22-2013, 04:24 PM
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#7
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Established Member
Join Date: Oct 2013
Location: Marion
Posts: 10
M.O.C. #13839
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Thanks one and all for your thoughts, notice two of you indicated a possible cutoff switch in the service area, just where is that located ? I've visually checked all fuses and breakers at the location in the hallway just above where I here what you say is the converter and they seem to all be ok. Once I know where the service area is I'll check for a battery cutoff switch.
Thanks again
Richard
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10-22-2013, 04:39 PM
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#8
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Montana Master
Join Date: Feb 2007
Location: Winfield
Posts: 7,327
M.O.C. #6846
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I think there is some confusion here since it appears that your rig is a travel trailer and not a fifth wheel. The advice I gave regarding a switch in the basement probably does not apply to your rig. The fifth wheels have the service areas but I do not think the travel trailers do. Sorry for the misleading advice.
Bingo
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10-22-2013, 10:37 PM
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#9
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Montana Master
Join Date: Mar 2011
Location: Okeechobee
Posts: 2,150
M.O.C. #11206
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Hi
I think there a large RV dealer in Marion NC.
You would think they could tell you if you have a battery disconnect switch.
Phil P
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10-23-2013, 02:33 AM
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#10
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Montana Fan
Join Date: Jan 2013
Location: Fountain Inn
Posts: 209
M.O.C. #13142
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I think there a large RV dealer in Marion NC
Tom Johnson Camping Center is in Marion NC.
Give them a call.
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10-23-2013, 06:45 AM
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#11
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Montana Master
Join Date: Apr 2009
Location: Murrieta
Posts: 5,816
M.O.C. #9257
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Please reconfirm that the battery is installed correctly. Checking there is 12 volts at the battery does NOT make sure the rig's cables are connected correctly. If the converter fan is running that's a good sign. You might want to remove some covers to see what is making the fan noise. It could be an inverter (nice surprise) and you'll want to know it' rating and accessibility.
Whether an owner is electrically comfortable or not, one should know how to check the distribution panel. Remove the cover and check the breakers, that they are all in the ON position especially the main one. In fact, to be sure you should turn each one off, then switch it back on. They have been known to stick. Some people turn them off to ensure there is no power to the rig or its circuits. If your rig is 2002 that's way before disconnect switches became popular, but maybe the prior owner put one in and certainly before service panels. Who knows where that switch might be because of this. Maybe you can ask the prior owner or dealer that they got it from.
Another question. Has this ever worked? When they bought their rig, did they get a walkthrough that showed things working?
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10-24-2013, 11:11 AM
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#12
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Established Member
Join Date: Oct 2013
Location: Marion
Posts: 10
M.O.C. #13839
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Thanks, I will call Tom Johnson's since I live close to them. Regarding the previous owner, believe it or not they never used it, shortly after buying it they became caregivers for parent and only grandchildren slept in it a couple of nights. Stickers still on windows, etc. tape on drawers in fridge and stove never lit. He said he only had it hooked to electric power at his house so he would not have known since he didn't run it off battery.
Richard
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10-24-2013, 11:19 AM
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#13
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Montana Master
Join Date: Apr 2009
Location: Murrieta
Posts: 5,816
M.O.C. #9257
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Then they did use it in that they plugged it into 110v but this does not verify all electrical outlets and lights worked. The battery is required to tow the trailer to its resting place unless it wasn't working and the battery didn't work (required for the electric brakes) and the TV did all the braking.
I'm convinced it's something simple, but need to be there to debug it. That call or trip to the RV dealer should do the trick if this is complicated.
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03-01-2014, 12:10 PM
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#14
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Established Member
Join Date: Oct 2013
Location: Marion
Posts: 10
M.O.C. #13839
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Since I'm going to take this camper to my farm & hook it up to 30 amp permanently does it really matter that the power from the 12v battery is working or not ?
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03-01-2014, 12:32 PM
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#15
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Montana Master
Join Date: May 2011
Location: Fayetteville
Posts: 4,200
M.O.C. #11401
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There should be a fuse in the battery line near the battery box on the tongue of the trailer.
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03-01-2014, 04:22 PM
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#16
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Site Team
Join Date: Aug 2007
Location: Omaha
Posts: 6,749
M.O.C. #7560
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Hook beat me to it! It sounds to me that the inline fuse has blown OR may not even be there! We had a situation at our local credit union that we had to repo a Jayco bunkhouse tow trailer and we had to remove the fuse that is in the line between the battery and into the unit to the converter. It was just outside the, it kept draining the battery and we could not open the slides on the unit to show it. Once we got the fuse pulled, it stopped the battey from draining. As you can tell this unit did not have a battery cut-off switch on it. Hope this helps and you get that power you need.
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03-01-2014, 04:42 PM
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#17
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Montana Master
Join Date: Jan 2012
Location: Copperas Cove
Posts: 1,426
M.O.C. #12096
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Since it's a 2002 and never used it just might be the battery if shot. I would pull the battery and take on down to Autozone and have it tested and then clean the clamps and terminals. Keep it simple first then work up to the puzzling stuff lol lol
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03-01-2014, 06:25 PM
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#18
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Montana Fan
Join Date: Dec 2013
Location: Renton
Posts: 362
M.O.C. #13959
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A lot of great advice already presented here, Buckshot. I also think it's an inline fuse.
Your question about does it matter is a great one. The only reason that it would matter (IMHO), and assuming you're going to be plugged in full time, is that emergency brakes operate from the battery. If you have a hitch failure towing, you'd potentially have no emergency brakes to slow the trailer when the breakaway cable activates them.
Dave's comment above about the battery possibly being shot is also a possibility. You should have it load tested. When you measured it, was it with the trailer plugged in or not? If plugged in, you may be measuring power from the converter, which is also a small battery charger. If it was unplugged and you measured 12 VDC, then it's probably an inline battery fuse or switch.
Good luck!
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03-02-2014, 01:49 AM
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#19
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Established Member
Join Date: Oct 2013
Location: Marion
Posts: 10
M.O.C. #13839
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Thanks one & all for your comments. #1 the battery is good almost new and tests 12+ volts when camper is unplugged from regular power.
#2 there is a small square box on the tongue and it says on the outside of it 80 amp and it tested also unplugged from land service 12 volts on both sides of box, does this not tell me that it is not a this fuse ?
Maybe there is another fuse there that I'm not seeing.
#3 When I bought it and had a friend transport it to my house he made the comment that the camper brakes were working.
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03-02-2014, 03:45 AM
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#20
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Montana Master
Join Date: Feb 2003
Location: Englewood
Posts: 3,095
M.O.C. #164
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Buckshot. All you need is a friend neighbor somone that knows how to use a 12 Volt meter or 12 volt test light. Disconect the 120 Volt unplug start with the battery and work your way up stream to the Converter checking for 12V.No rv Tech need maybe your local garage will make a house call
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