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06-27-2018, 05:21 PM
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#1
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Junior Member
Join Date: Jun 2018
Posts: 17
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Crossed batteries
I have a 2000 Coleman Catalina and crossed my batteries. I read an older post on here about a guy who did the same. Now I have no 12v from the battery. I plug into 110 everything works fine. I’ve searched hi and lo for fuses and no luck. It has a magnetek 6300 q series converter in it. I can’t see any fuses on that. Any input would greatly be appreciated!!
Thanks nick
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06-27-2018, 05:28 PM
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#2
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Senior Member
Join Date: Apr 2017
Location: Jefferson, PA
Posts: 451
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You should have one or two polarity fuses in your fuse panel.
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Larry
2014 Ram 3500 Dually 4x4 6.7 Cummins
2017 Sandpiper 378FB
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06-27-2018, 05:34 PM
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#3
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Site Team
Join Date: Oct 2014
Posts: 15,294
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You blew the Reverse Polarity fuses ( 30-40A) orange or Brown. In your distribution panel.
In Center under the Caution Label.
Once you replace the fuses. label the battery wires for next time
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2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 100W solar panels
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06-27-2018, 05:37 PM
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#4
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Junior Member
Join Date: Jun 2018
Posts: 17
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Both are fine ��
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06-27-2018, 05:40 PM
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#5
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Site Team
Join Date: Oct 2014
Posts: 15,294
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Did you check actual fuses or just visually check? You can also check the resettable breaker under the frame on the tongue. Push the small button on the end.
__________________
2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 100W solar panels
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06-27-2018, 05:43 PM
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#6
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Junior Member
Join Date: Jun 2018
Posts: 17
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Panel
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06-27-2018, 05:48 PM
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#7
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Junior Member
Join Date: Jun 2018
Posts: 17
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Quote:
Originally Posted by Flybob
Did you check actual fuses or just visually check? You can also check the resettable breaker under the frame on the tongue. Push the small button on the end.
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I visually checked each. And I don’t have a resettable breaker sadly
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06-27-2018, 06:04 PM
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#8
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Senior Member
Join Date: Aug 2014
Location: Northern KY
Posts: 5,725
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Witzke24
do you have even a cheap voltmeter?
trying to fix electrical issues is like closing your eyes when you work...
spend $5 at Harbor Freight or even Walmart and get one... then people here can teach you how to use it to test your connections and fuses...
a voltmeter is a basic tool to have in your toolbox
__________________
"nothing can now be believed which is seen in a newspaper. Truth itself becomes suspicious by being put into that polluted vehicle."
Thomas Jefferson to John Norvell pg. 2, June 11, 1807
2014 Shamrock 183
2014 RAM 1500 Bighorn Crew Cab, HEMI, 3.21 gears, 8 Spd, 4X4 TST TPMS
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06-27-2018, 06:32 PM
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#9
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Junior Member
Join Date: Jun 2018
Posts: 17
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Quote:
Originally Posted by rsdata
Witzke24
do you have even a cheap voltmeter?
trying to fix electrical issues is like closing your eyes when you work...
spend $5 at Harbor Freight or even Walmart and get one... then people here can teach you how to use it to test your connections and fuses...
a voltmeter is a basic tool to have in your toolbox
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Since that post I have gone thru the fuses with a volt meter. They all test fine. I guess my next question is can the converter be bad? I’m not electrician by any means. But when 110 is hooked up everything works. Now for lights, pump etc. is it then converted to 12v or can they run off both. I’m sorry if everyone thinks I’m dumb and I really do appreciate the help. But I have literally tore everything apart to find any kind of fuse etc.. and found one 30 amp fuse by the battery and it was fine.
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06-27-2018, 06:51 PM
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#10
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Senior Member
Join Date: Jul 2017
Location: North of Seattle, WA
Posts: 17,334
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You essentially have two systems that are operating at the same time when you have the trailer plugged in.
The 120 volt system is powering the converter which is providing 12 v power to run lights, etc, and charge batteries.
You then have the battery which is either receiving power from the converter when charging or providing power to the 12 volt system when unplugged from 120 v.
I would suggest that the trailer be unplugged from the 120 v power supply first. Then with a voltmeter start at the battery and check every connection along the battery positive wire for the presence of 12 volt. If you lose that voltage at any point, like a switch, circuit breaker, fuse, or even a "Wire Nut/Butt Connector", you just found your problem. If you have 12 Volt at the converter + and - terminals when the trailer is unplugged, you have a defective converter if the voltage doesn't rise to well over 13 volts when the trailer is plugged in.
It's best to diagnose one section at a time or you'll get false readings.
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"A wise man can change his mind. A fool never will." (Japanese Proverb)
"You only grow old when you run out of new things to do"
2018 Flagstaff Micro Lite 25BDS
2023 f-150 SCREW XLT 3.5 Ecoboost (The result of a $68,000 oil change  )
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06-27-2018, 06:57 PM
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#11
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Senior Member
Join Date: Mar 2014
Location: Mountain Foothills of Southern Alberta
Posts: 2,004
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There is a section in this manual on checking the internal transfer relay (sixth page down), which is what it seems like could be the problem.
http://www.hayseed.net/~jpk5lad/RV%2...%20Binder1.pdf
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2007 Surveyor SV230 - 200 Watts Solar/MPPT Controller - 220 AH Battery Bank (Two-GC2) - 600 watt PSW Inverter - (2) 2000 watt Inverter Generators - LED Lighting
2009 F150 - 5.4 Litre with Tow Package
Boon Docking 99% of the time.
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06-27-2018, 06:59 PM
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#12
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Member
Join Date: Mar 2018
Posts: 77
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Crossed batteries
I'd start from the beginning. How did you "cross your batteries"? Disconnect both batteries, then verify you have 12VDC across each of them, observing the polarity (-/+) on each post. Connect one to the coach and check for 12VDC. Connect the second one, observing and parallelling the battery connections with the first battery, and verify the 12VDC is still there. Next, check the heavy red and black 12VDC connections at the panel. It is possible that you lost a good connection between the battery terminal and post if there was an arc.
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1stSgt Abe Aviles
USMC Retired
2014 FR3 25DS
San Pedro, CA
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06-27-2018, 07:02 PM
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#13
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Site Team
Join Date: Mar 2014
Location: Grayson County, Texas
Posts: 21,561
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Quote:
Originally Posted by Witzke24
Panel
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This pic does not show the big reverse polarity fuses we’re talking about. You may have to look on the sides of your converter.
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2015 FR Wildcat 295RSX / GMC Sierra
Nights Camped: '13 = 49/'14 = 74/'15 = 74/'16 = 85/'17 = 110/'18 = 111/'19 = 86/'20 =108/'21 = 115/'22 = 135/'23 = 78; Booked for 2024 = 69 |
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06-27-2018, 07:05 PM
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#14
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Junior Member
Join Date: Jun 2018
Posts: 17
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Boondocking I did see that. Here is a pic of my meter. The top right dcv is what I had it on. Is that right? If so I’m reading zero on both with battery on. And 120 not hooked up
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06-27-2018, 07:05 PM
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#15
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Senior Member
Join Date: Mar 2014
Location: Mountain Foothills of Southern Alberta
Posts: 2,004
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Quote:
Originally Posted by Mr. Dan
This pic does not show the big reverse polarity fuses we’re talking about. You may have to look on the sides of your converter.
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There are no reverse polarity fuses with that model converter.
__________________
2007 Surveyor SV230 - 200 Watts Solar/MPPT Controller - 220 AH Battery Bank (Two-GC2) - 600 watt PSW Inverter - (2) 2000 watt Inverter Generators - LED Lighting
2009 F150 - 5.4 Litre with Tow Package
Boon Docking 99% of the time.
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06-27-2018, 07:08 PM
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#16
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Site Team
Join Date: Mar 2014
Location: Grayson County, Texas
Posts: 21,561
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Quote:
Originally Posted by boondocking
There are no reverse polarity fuses with that model converter.
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Well..........
Er, uh......
Thanks. I’m going back to sleep. 
__________________
2015 FR Wildcat 295RSX / GMC Sierra
Nights Camped: '13 = 49/'14 = 74/'15 = 74/'16 = 85/'17 = 110/'18 = 111/'19 = 86/'20 =108/'21 = 115/'22 = 135/'23 = 78; Booked for 2024 = 69 |
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06-27-2018, 07:09 PM
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#17
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Junior Member
Join Date: Jun 2018
Posts: 17
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..
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06-27-2018, 07:18 PM
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#18
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Senior Member
Join Date: Jul 2017
Location: North of Seattle, WA
Posts: 17,334
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Quote:
Originally Posted by Witzke24
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Has your meter been set like this from the beginning? 
__________________
"A wise man can change his mind. A fool never will." (Japanese Proverb)
"You only grow old when you run out of new things to do"
2018 Flagstaff Micro Lite 25BDS
2023 f-150 SCREW XLT 3.5 Ecoboost (The result of a $68,000 oil change )
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06-27-2018, 07:20 PM
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#19
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Junior Member
Join Date: Jun 2018
Posts: 17
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Quote:
Originally Posted by TitanMike
Has your meter been set like this from the beginning? |
No..  haha yes sadly... that’s why I build race cars and install pop machines for a living
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06-27-2018, 07:25 PM
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#20
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Senior Member
Join Date: Jul 2017
Location: North of Seattle, WA
Posts: 17,334
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Like none of us have ever done the same ��������
__________________
"A wise man can change his mind. A fool never will." (Japanese Proverb)
"You only grow old when you run out of new things to do"
2018 Flagstaff Micro Lite 25BDS
2023 f-150 SCREW XLT 3.5 Ecoboost (The result of a $68,000 oil change )
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