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Old 09-13-2017, 11:39 PM   #1
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Dual Battery

I setup these batteries, but now one by one the internal lights went out, But the outside small lights that goes around the bus all are working, but one head light is out and the other is super bright, fans seems to be running super fast. I think I have added two much power directly to the BUS.

The problem I was having is the BUS came with a small car battery and while cleaning and listing to music the battery never lasted long. I bought this two battery off CL and it seem to have brighten everything up but while working tonight one my one each light went out and they done seem to be blown, I think I might start looking into rewiring the BUS??
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Old 09-13-2017, 11:54 PM   #2
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You have hooked up the batteries in 24 volts. You may already have burned out any electronics. most likely you have burned a bunch of bulbs. This is assuming the bus is 12 v and not 24.
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Old 09-14-2017, 12:23 AM   #3
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So they need to be connected this way? I'm changing all the Bulbs over to LED anyways, Is that all the damage I could have done??
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Old 09-14-2017, 12:59 AM   #4
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The funny thing is the tops lights listed below works with them connect incorrectly... This is very strange
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Old 09-14-2017, 01:19 AM   #5
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Disconnect them for the night until you can figure it out. Hate to see your bus burn.
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Old 09-14-2017, 01:25 AM   #6
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So I should not have listen to the guy who sold me them WOW, These are 12v Deep Cycle, CarQuest Marine DCG27.

Ok so there's three connections connect to the battery, Two positive and one negative, Is just for the engine??
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Old 09-14-2017, 01:40 AM   #7
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The marine batteries will be fine for long, moderate loads like listening to the radio and such. Using them to start the engine on a regular basis will greatly shorten their life.

And yes, your first pic shows a 24V setup, which will quickly blow light bulbs and electronics not designed for it. The later 12V setup is what you need.
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Old 09-14-2017, 01:45 AM   #8
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The first setup would have been fine if you had a pair 6V batteries, resulting in a 12V setup (not common these days but I have seen them).
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Old 09-14-2017, 01:54 AM   #9
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Why did the other lights work and now not??
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Old 09-14-2017, 03:01 AM   #10
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Because incandescent lights work at a *RATED* voltage. They are designed for a specific voltage. They will glow at a higher or lower voltage, with a corresponding increase or decrease in light. The higher voltage will shorten their life, while a lower voltage will increase their life. Given that (I am assuming) the bulbs already had lived a good portion of that life, the higher voltage was enough to end their life.

LED bulbs are a different matter, some will generate about the same amount of light within a fairly broad spectrum of voltage (and some are rated up to 24V). Others will vary in brightness based on the voltage, though perhaps to a lesser degree than incandescent bulbs.
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