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Old 02-07-2016, 11:01 PM   #1
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Red=Positive ???

I took the battery out for the winter and now that I'm ready to install it, not sure which wire is the positive. I have a red wire and a white going to the battery box I would think that the red would be positive?? am I right
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Old 02-07-2016, 11:04 PM   #2
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Red should be positive.
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Old 02-07-2016, 11:05 PM   #3
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What color is your RV because we dont know what kind or model it is? Youroo!!
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Old 02-07-2016, 11:23 PM   #4
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Yes, red is positive. If you have a multi-meter you can verify this. Measure on the ohms scale between the white wire and some part of the chassis of the trailer. (find some bare metal or a screw, bolt, or nut) It should measure 0 ohms or a dead short.
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Old 02-07-2016, 11:34 PM   #5
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White is almost always neg.black or red is positive.Unfortuneatly there is no "code" for low voltage wireing,but what I stated above will cover 95% of any factory instalations.
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Old 02-07-2016, 11:41 PM   #6
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Just make sure you are on the lowest ohms scale, especially if you are using an analog meter. On the higher ranges, your meter may measure full swing through internal circuits such as a light bulb. Also make certain the shorepower is unplugged first. Ohm meters don't like voltage/current.
Another test is to insulate the red and white cable ends, then plug the unit in and check polarity from your converter, but I would de power any other 12 volt appliances, like radios. Our 12 v batteries make better regulators than some converters.
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Old 02-08-2016, 09:33 PM   #7
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Thank you all good replies, I figured it was positive but was use to seeing black also.
youroo he TT is a Surveyor 220RBS
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Old 02-08-2016, 11:47 PM   #8
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Quote:
Originally Posted by youroo View Post
What color is your RV because we dont know what kind or model it is? Youroo!!
It looks as though it is white and brown.
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Old 02-09-2016, 12:06 AM   #9
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Red is negative in the telecommunications world... and it's -48VDC. Everywhere else, red's positive... that I know of anyway.
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Old 02-09-2016, 09:21 AM   #10
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Could there be a small wrap of black electrical tape on the white wire close to the lug that you overlooked?
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