View Poll Results: On which terminal should the the battery disconnect be on?
Positive terminal 4 50.00%
Negative terminal 3 37.50%
No idea 1 12.50%
Voters: 8. You may not vote on this poll

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Old 07-17-2015, 08:40 AM   #1
DSG
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Backwards battery hook-up..no thermostat

Hi there,
Hoping someone can help. Have a new 2015 Sunset Trail 240BI.

In a hurry getting to head out yesterday and I reversed the battery connections.

Fixed the connections and replaced all 4 reverse polarity 20A fuses- and headed out. Drove 300 miles, setup and hooked up. No radio no thermostat display or furnace/AC. Lived with it for the night. Got up this morning with a fresh head and recheck everything without a multi-meter. Found one of the fuses I stuffed in was bad. Replaced- no joy. Pulled radio and found blown 10amp...sucess..its back.

Pulled cover for thermostat, hoping to find a DC fuse, but only a 2A 250V.

Any suggestions would be aprreciated..the DC power converter is a Worldfriend 8965, and the thermostat is a RV comfort. HC Coleman Mach

With a forecast well into the 90s tomorrow, would love to keep the queen and the 3 jesters cool. Thanks in advance.
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Old 07-17-2015, 08:45 AM   #2
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Check the fuses in the fuse panel. Just because the Led is not lit, does not mean the fuse is not bad.

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Old 07-17-2015, 08:53 AM   #3
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Good idea cw3jason...Just swapped all the 15 amp fuses around just in case could not see break...no difference.
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Old 07-17-2015, 12:31 PM   #4
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Your heater thermostat is probably driven with 12v's and I'd expect your thermocouple to be a millivolt driven unit.
Hence, have you checked your converter fuses?
Different brand then mine but mine has two 35 amp fuses underneath.
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Old 07-18-2015, 08:40 AM   #5
DSG
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Fixed!!

It was the fuse in the thermostat. Went out and bought a multi meter, and no continuity. Still shaking my head because it looks fine.

Thanks for the suggestions guys!

Darren
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Old 07-19-2015, 06:37 AM   #6
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Glad to hear you got it fixed
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Old 07-19-2015, 06:42 PM   #7
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The thing to remember about RVs, they are not vehicles. They are wired like houses, someone said that to me once and I've always remembered. Now I don't put the wires on the wrong connection. The black wire is +.
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Old 07-20-2015, 08:06 PM   #8
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wiring

Not sure what year they changed it but my 2001 cardinal 5th wheel was like a car battery, black neg and red pos. Now my 2012 5th wheel is black pos and white neg.
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Old 07-20-2015, 08:29 PM   #9
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Quote:
Originally Posted by shoe2728 View Post
Not sure what year they changed it but my 2001 cardinal 5th wheel was like a car battery, black neg and red pos. Now my 2012 5th wheel is black pos and white neg.
Well...In the absence of a "red wire", Black is positive.
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Old 07-20-2015, 09:22 PM   #10
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If one were to put a quick disconnect would it be on the negative (white) side or positive (black) side?
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