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dual Battery Setup

Discussion in 'The Garage' started by jstout, Feb 5, 2005.

  1. jstout

    jstout Registered Member

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    Ive got a 88 K-5 Blazer Ive got the tray and all I need to find is a good wiring setup/Isolator. any one know of any
     
  2. AkMudr

    AkMudr 1/2 ton status

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    Painless Wiring makes a nice setup that allows you to control the second battery..isolate or combine. Its about $80, they also have it in a waterproof version for like $150.

    I plan on gettin the regular kit sometime soon.

    [​IMG]
     
  3. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Just wire your batteries in parallel.
     
  4. cbbr

    cbbr 1 ton status GMOTM Winner

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  5. gravdigr

    gravdigr 1/2 ton status

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    Wiring in parallel does not isolate the batteries. And he asked for a GOOD setup/isolator.
     
  6. sweetk30

    sweetk30 professional hooker Premium Member

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    you must always use the same exact batterys also .if done this way
     
  7. xtrmjoe

    xtrmjoe 1/2 ton status

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    perko makes a very simple switch to wire. for marine set ups but i have one and I love it. cheap to!
     
  8. dontoe

    dontoe 3/4 ton status GMOTM Winner

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  9. mikey_d05

    mikey_d05 1 ton status GMOTM Winner

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    Isolators produce voltage drop, go with the Painless setup, it uses a constant duty solenoid. Hell, if you can find a good solenoid, you can wire your own setup. Besides, if you run a perko marine switch you'll be running all of the current in the vehicle into the passenger compartment.
     
  10. Burt4x4

    Burt4x4 3/4 ton status

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    I whent hitech and have been running this for years...
    Hellroaring setup

    [​IMG]
    [​IMG]
    Worth every penny.....
     
  11. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Why would you run a #4 wire to the battery, and a #2 wire from there to the starter? Seems counterproductive to me, despite that one run being fairly short. I went #2 all around, even on the aux. battery and never looked back.

    Then again, mine are in parallel, never had any issues with that either.
     
  12. Burt4x4

    Burt4x4 3/4 ton status

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    Who knows why he (Hellroaring) has that #4 there??:confused: I used #2 for all my cables:D
     
  13. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Sounds good. I suspect they figured the isolator was going to be close to the battery, so a short run of smaller wire was ok. That said, I don't like that idea, and I prefer to see #2 or bigger everywhere...it really can never be too big when you're talking about that much current @ 12v.
     
  14. jarheadk5

    jarheadk5 1/2 ton status

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    I'm guessing it's because that #4 wire, according to the posted Hellroaring pic, is running to the backup battery.
    I agree with you though, if it were mine I'd run #2 or better all around, especially with a winch and/or a diesel.
     

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