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Old 05-30-2011, 09:28 PM   #1
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Connecting new auxiliary batteries

Can anyone give me a quick reply on how to connect the auxiliary batteries? There is a long and short red cables and a long and short black cables. I want to be sure to connect correctly. Thanks.
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Old 05-30-2011, 09:46 PM   #2
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BGoebel would need more info. like 2 or 3 12volt or 2 or 4 6volt type of rv yr. etc then might be able to help a pic would help to.
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Old 05-30-2011, 09:51 PM   #3
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There should be one red positive cable and one black negative (ground) cable coming from the RV, going to the batteries. The red cable connects to the positive post of one of the batteries, the black connects to the negative terminal on the other battery. If you have 2 batteries for the coach they could be either be two 6 volts wired in series or two 12 volts wired in parallel.
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Old 05-30-2011, 10:57 PM   #4
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Very good diagram
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Old 05-31-2011, 03:22 PM   #5
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In some RVs the cables are black & white rather than red & black, and the white is the ground and the back hot. Confusing, eh?
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Old 05-31-2011, 05:54 PM   #6
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Quote:
Originally Posted by Gary RVRoamer View Post
In some RVs the cables are black & white rather than red & black, and the white is the ground and the back hot. Confusing, eh?
That's what I like about this place you can always learn something new.

For at least the past 20 years or more batteries have been very well marked with + & - posts, don't know how many years it's always been (lead acid battery) the fatter post is positive and the skinnier one is negative.
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Old 06-01-2011, 09:07 AM   #7
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Quote:
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In some RVs the cables are black & white rather than red & black, and the white is the ground and the back hot. Confusing, eh?
Nothing like consistency. In my coach both the pos. and neg. cables connecting to my coach batteries are black!
I put red tape on the pos. cable.
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