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Boomerweps
Hills of PA
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Joined: 04/30/2018
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Confusion sometimes occur from people working on house electric and mobile electric. House electric BLACK is hot, white is neutral or return, green is ground. Mobile 12vdc RED is hot/positive and black is return/negative/ground.
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4x4van
California
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And to make it even more confusing, many RVs use yellow as positive and white as negative!
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JRscooby
Indepmo
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Boomerweps wrote:Confusion sometimes occur from people working on house electric and mobile electric. House electric BLACK is hot, white is neutral or return, green is ground. Mobile 12vdc RED is hot/positive and black is return/negative/ground.
4x4van wrote:And to make it even more confusing, many RVs use yellow as positive and white as negative!
I have not worked on all that many campers, but every one I have used white for ground. Now the positive, I have seen black, red, and brown. Yellow is new to me, but I would accept the possibility.
OP, Disconnect the battery, grab your Ohm meter, and check for continuity frame/end of white wire.
Reversed polarity is all that is needed to reverse direction a DC motor runs. And reversed polarity will blow fuse to protect the converter.
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stickdog
Somewhere, USA
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I've learned pictures are better than my memory.
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Huntindog
Phoenix AZ
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Joined: 04/08/2002
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rmnpcolorado wrote:I think you’re exactly right, as when I disconnected the battery, replaced the fuses, and powered back up, all was good.
Now to figure out how I messed that up. I’ve only done this how many times before… You probably blew the fuses on the convertor. There is ususally 4 of them IIRC. They are there just for when the battery is hooked up backwards. To prevent future brain farts, only dissconect 1 battery cable.
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Fizz
Ottawa, Canada
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Joined: 07/28/2003
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stickdog wrote:I've learned pictures are better than my memory.
YUP!
Got a new boat last year. When I winterized it I saw the mess of wires going to the battery. Good thing I took a picture because I would have been lost this Spring trying to get it right.
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JRscooby
Indepmo
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Huntindog wrote:rmnpcolorado wrote:I think you’re exactly right, as when I disconnected the battery, replaced the fuses, and powered back up, all was good.
Now to figure out how I messed that up. I’ve only done this how many times before… You probably blew the fuses on the convertor. There is ususally 4 of them IIRC. They are there just for when the battery is hooked up backwards. To prevent future brain farts, only dissconect 1 battery cable.
Few inches of duct tape, make a flag large enough to write positive or negative with sharpie.
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rmnpcolorado
Madison, WI
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Joined: 09/01/2004
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For everyone wondering, it was that I indeed had the wires backwards. Black to positive, white to negative and all is well again. We take the battery completely off in wintertime and keep it in our basement. Even though I try to leave the wires on their respective sides, I suspect that when it was moved in and out of the shed they shifted and I didn’t think about it until I had no power. I’m still trying to figure out which one is supposed to have the inline fuse though, as it’s a red wire. I’m assuming positive. I want to make tags to identify them right on the wires.
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CA Traveler
The Western States
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rmnpcolorado wrote:I want to make tags to identify them right on the wires. And then take and retain pictures.
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Bobbo
Wherever I park
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Take green electrical tape and wrap it around the ground wires. Take red electrical tape and wrap it around the hot wires. Taking photos is great, as long as you can find the photos.
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