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  1. #1

    Default Dual Batteries... Which battery to use?

    I have a 2000 chevy 6.5 Diesel with two batteries. I wanna install accesories(radio amp, lights, air compressors, ect.) Can somebody tell me which battery I should wire these things to? Does it matter Drivers or passenger side? Im not really sure how the charging/starting/drawing works with two batteries. Any knowledge would be greatly appriciated thanks
    00 Chevy k3500
    6.5 turbo Diesel
    Straight Pipe 4'' dual Exhaust
    HD Aluminium Wheels
    HID Headlights/LED Taill ights
    Airbag 5k LBS helper springs
    LED interior lights

  2. #2

    Default

    I know for jump starting a vehicle with two batteries you always jump from the main battery and main negative. So, my best guess would be the same for running accessories. One of the batteries should be connected to the main positive or the one going to the starter. (this would be the one to run accessories off of). Have to trace the wires but find the battery that runs cables from itself to the other battery directly (this battery would be the secondary) the other battery would be the main battery.

    Hope this makes since, and be my best guess.

  3. #3

    Default

    It doesn't make any difference.

    The dual batteries on a diesel are wired in parallel with heavy cables for maximum starting power.
    When you hear hoofbeats, look for horses not zebras.

  4. #4
    Jr. Apprentice
    Join Date
    Dec 2010
    Location
    Edmonton Alberta
    Posts
    18

    Default

    Quote Originally Posted by 2COR517 View Post
    It doesn't make any difference.

    The dual batteries on a diesel are wired in parallel with heavy cables for maximum starting power.
    Yes, which ever on is more convenient to attach wires to.

  5. #5

    Default

    Thanks guys, makes things easier. I can wire things straight back instead or around the engine

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