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Old 05-18-2015, 01:26 PM   #1
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Replacing house batteries - without a wiring diagram

I recently replaced the four 6-volt house batteries in our coach. I wanted to be absolutely SURE to get all the heavy cables back where they belong, so before I removed them, I marked them.

I numbered the house batteries "House 1" through "House 4." I also noted which way each battery went into the tray. Batteries 1 and 3 went in with the MINUS terminals towards the basement door. Batteries 2 and 4 went in with the PLUS terminal towards basement the door. They are all Interstate AGM Deep Cycle batteries.

I then marked each end of each cable with the battery number and a plus or minus sign as appropriate, such as "H1+" or H3-" etc. Each cable ended up with two labels on it - one on each end. You get the idea.

Marking the cables like this made this battery replacement job VERY easy.

Click on the attached image to see what things looked like when I was all done.
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Old 05-18-2015, 02:23 PM   #2
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OR you could have taken a pic like you did above and use it.
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Old 05-18-2015, 06:14 PM   #3
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If I had just taken a picture before doing the work, there would have been no labels on the wires. That's what made it easy.
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Old 05-18-2015, 06:25 PM   #4
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I tell folks this:
There is one or more wires hooked to POSITIVE terminals that run off to terminal blocks,,Fuses,Breakers or switches..Mark with RED PAINT (or nail polish)

There is also 1 or more wires hooked to negative that run off to who knows where.. Mark with BLACK (if not already black)

PHOTO the rest.

That is how my coach is wired save for one difference.. The cable jacket (Insulation) is RED on the positive wires to began with.. I installed them that way (They are upgraded) NOTE: do not trust colors unless YOU personally installed or checked them Trust only the markings on the battery.
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Old 05-18-2015, 09:01 PM   #5
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Looks nice and neat.
Good job!
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Old 05-18-2015, 09:06 PM   #6
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Very nice job. I labeled mine when I replaced them too, but not as nice as yours. The labels are a lot easier to read than a photo.
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Old 05-19-2015, 07:09 AM   #7
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Quote:
Originally Posted by Rich-n-Linda View Post
If I had just taken a picture before doing the work, there would have been no labels on the wires. That's what made it easy.
I see. It is a very neat job, where did you get the labels or did you make them with a label maker?
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Old 05-19-2015, 07:46 AM   #8
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I should have added in my earlier post (What can I say was late in the day) that you did a fine job.. Unlike so many who do not go to the trouble of marking the wires.

I have heard of dealers (Even been to one of them for parts) who did not do as well as you did,,, and thus had to do it over.
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Old 05-19-2015, 09:12 AM   #9
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Get smart on how/why they should be wired. Mine wasn't (second owner). The coach's pos and neg leads went to the first parallel/series battery's terminals instead of one on the first and one on the last battery. The way it was worked but does not put an even load on the battery bank and does not charge the bank evenly either.
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Old 05-20-2015, 10:07 PM   #10
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I see. It is a very neat job, where did you get the labels or did you make them with a label maker?

I made them with a little Brother label printer hooked up to the computer. It uses 1/4", 1/2" and 3/4" wide label tapes. Those labels were printed on the 3/4" wide tape.
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Old 05-21-2015, 12:05 PM   #11
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What coach do you have? That looks exactly like my battery setup.
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Old 05-24-2015, 09:49 PM   #12
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It's an '06 Thor Mandalay 40E.
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