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03-29-2016, 05:06 PM
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#1
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Junior Member
Join Date: Feb 2016
Location: Baton Rouge La.
Posts: 7
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No 12 volt power in coach
i have a 2003 fleetwood jamboree
i have no 12 volt power in coach,shore power or not,batteries good converter good 13.57v out back of converter. need help thanks
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03-29-2016, 05:19 PM
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#2
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Senior Member
Join Date: Dec 2013
Location: Plantation, Fl
Posts: 1,876
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Is your battery switch turned on ?
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2024 Jayco Redhawk 26 M (OCCC challenged)
2017 RWD F 150 with a drive shaft disconnect
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03-29-2016, 05:32 PM
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#3
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Junior Member
Join Date: Feb 2016
Location: Baton Rouge La.
Posts: 7
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yes, may be a ground but where
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03-29-2016, 05:34 PM
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#4
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Senior Member
Tiffin Owners Club Freightliner Owners Club
Join Date: Aug 2014
Posts: 1,899
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The only thing this forum can tell you is to start checking. There are too many things that can cause this.
Do you know how to use a voltmeter (best) or a test light(still OK).
Basically your converter converts 120V to 12V DC AND charges the batteries.
When you plug into shore power, the converter begins to charge your batteries and also provide the 12V for the lights.
Since your batteries are good, you need to start following the battery cable as it leaves the POS. terminal, and check the voltage at the next connection.
Work your way to the converter, and then out of the converter and into the coach. Your battery disconnect may be inside your converter.
Somewhere, you will stop seeing the 12v....and that is where your problem is (between the last good measurement, and the bad measurement.
You might have breakers or fuses on the output of your converter.
I think your battery circuit will run through your converter....but not 100% sure...others can confirm.
Good Luck,
Dan
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2014 40QBH Phaeton DP Cummins 380HP ISL, Freightliner XC, 2019 Jeep Grand Cherokee Trailhawk TOAD
Blue Ox Aventa tow bar, SMI Air Force One -Cave Creek, AZ.
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03-29-2016, 05:46 PM
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#5
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Junior Member
Join Date: Feb 2016
Location: Baton Rouge La.
Posts: 7
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Thank You
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03-29-2016, 06:51 PM
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#6
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Senior Member
Solo Rvers Club
Join Date: Mar 2011
Posts: 846
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On every rig I have owned. The converter would power the interior lights when plugged into AC power.
That could be where to look first. Why no 12V with AC to the rig..
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2007 Roadtrek 210 Popular
Chevy 6.0
2015 GMC Terrain
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03-29-2016, 07:04 PM
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#7
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Senior Member
Winnebago Owners Club
Join Date: Jan 2014
Posts: 539
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I have a rocker switch on the dash of my coach and if you bump it or push it, it will kill all the 12 volt system in the coach.
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07 Meridian 34H 350 Cat
2010 Subaru Forester Tow
Home Port is Kingman,Az
KA7UYZ NRA Endowment Member Retired Fire Service
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03-30-2016, 03:16 PM
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#8
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Senior Member
Join Date: Nov 2015
Location: Anchorage, Alaska
Posts: 411
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Failure of 12V Lights and other 12V Systems when Shore Power is Disconnected.
The first thing I would check. The Block diagram will show you where it is.
- Manual Reset Circuit Breaker (tiny button on end)
This button is hard to find, very small and hard to see without a flash light.
This link will take you to a Block Diagram of 12V System Components
http://manuals.heartlandowners.org/m...iagnostics.pdf
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03-31-2016, 09:22 AM
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#9
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Junior Member
Join Date: Feb 2016
Location: Baton Rouge La.
Posts: 7
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Thanks to all,S Bradley that link was awesome.
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04-03-2016, 06:54 PM
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#10
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Junior Member
Join Date: Feb 2016
Location: Baton Rouge La.
Posts: 7
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it was the manual reset breaker,4 dollars later i'm good to go. Thanks Again
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04-04-2016, 12:10 AM
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#11
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Senior Member
Join Date: Nov 2015
Location: Anchorage, Alaska
Posts: 411
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$4 GREAT, that's what we all hope for, great savings.
Glad to have helped.
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04-05-2016, 01:41 PM
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#12
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Junior Member
Join Date: Feb 2016
Location: Baton Rouge La.
Posts: 7
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now that i have worked my ele. system i have better understanding how it all works.all you need is multimeter and you can chase any problem.
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04-09-2016, 09:12 PM
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#13
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Senior Member
Join Date: Nov 2015
Location: Anchorage, Alaska
Posts: 411
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Add a Load pro to your Multi Meter and you will be able to test nearly all 12V issues.
For quick & dirty testing a simple probe will work. Don't poke holes in wires if the tip is sharp, I would actually file off that sharp point.
Just some suggestions.
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