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    dual batteries... wiring question

    Well so one of the batteries died this weekend as I kind of expected as it didn't take a great charge the last time I tried when I summerized it. So I went to replace the battery and noticed something kind of funny.... well at least to me. Turns out my dealer seems to have ran all my stereo stuff to my crank battery instead of my deep cycle battery as he did alot of my stereo install. Now considering I have nearly 3000 watts in my system I'm thinking this prob. wasn't to smart. So I started thinking that maybe just maybe I switched the batteries after putting them back in from being charged. So I switched them up. But I went to start the boat w/ what was now the deep cycle battery turned off, and NOTHING. So I turn on the deep cycle battery and the crank battery off and it fired right up. Since I know a bit better than to try and use the deep cycle battery to start the boat permanently, I've decided to change things up and make them right.

    So here's where my question begins. There's not enough slack in the speaker wire w/o re-running everything to move it all over to the other battery... so I plan to switch the battery positions and move the motors terminals. I'm assumine the two batteries are ran in parallel but I can't find the positive lead anywhere. I can only find the negative. But I didn't look to long. Can I just move the negative lead over to the other battery and the positive lead over the other way to basically keep things how they were w/ the boat starting off the crank battery and then I'll have my stereo wires off my cranking battery. This way I can just turn off my crank battery and not have to worry about it ever draining when parked and playing the stereo.

    I mean I could leave it how it is, but I run the risk of draining down my crank battery Then I have to use the deep cycle to give me enough boost to start. Not liking that idea.
    Being a major OU fan and a staunch conservative.... I am perpetually vexed w/ the conundrum of who to hate more. Obama or the Univ. of Saxet.

    #2
    With a dual battery switch you should use two batteries of the same type to less strain on the alternator.

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      #3
      Do you have a diagram?
      Cursed by a fortune cookie: "Your principles mean more to you than any money or success."

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        #4
        I'm with Lee on this one, I've got Deep Cycle for both.

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          #5
          Originally posted by john3540
          I'm with Lee on this one, I've got Deep Cycle for both.
          I don't think Lee was advocating Deep Cycle batteries for a starter battery. Deep cycle batteries are designed for long slow discharges and starter batteries are designed for discharges required for starting your motor.
          Cursed by a fortune cookie: "Your principles mean more to you than any money or success."

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            #6
            Tanner,

            I have both deep cycle, and all the stereo is wired to number one battery. However, stereo still plays when on number two. I haven't had any problems what so ever. I'll take a look at it Sat if you want me too.
            Originally posted by G-MONEY
            It hurts me to say it but go OU but only for this weekend!!!!

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              #7
              Well if that's the case guys.... do you think that Leaving the deep cycle battery in the #1 position w/ all my stereo stuff on it and then the crank battery in the #2 position should be ok?
              Being a major OU fan and a staunch conservative.... I am perpetually vexed w/ the conundrum of who to hate more. Obama or the Univ. of Saxet.

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                #8
                It does not matter the type of battery just that both are the same and of the same age.

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