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Dual batteries on 85?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by txbartman, Jun 13, 2001.

  1. txbartman

    txbartman 1/2 ton status

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    I am looking to install dual batteries on my 85. I was planning on buying a setup designed for an RV from JC Whitney or something like that. Found one that supports two batteries and up to a 90 amp alternator for $50. Does this sound good? Any other ideas?

    85 GMC Jimmy, 305 w/TH700-NP208, 32X11.5 BFG ATs, 15x10 Eagles, Smittybuilt tube nerf bars and bumbers
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    Dual batteries are cool IF you need it. Extra wiring in the charging system, (heck ANY electrical system) if it can be avoided, should be. I am going to eventually set mine up so that I can hook up two batteries when I need to (like when I've been using my electric trolling motor) but so that I don't need two in there all the time.

    Diesels had two battery setups, so that is a good source for some of the wiring and the other battery tray, which is a bolt in with some light drilling.

    Dorian
    My tech/links page: <A target="_blank" HREF=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</A>
    No anti-theft measures on your truck? No pity when its stolen
     
  3. jms

    jms 1/2 ton status Author

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    I'm running dual Optima batteries in my '85 Jimmy - if you're quick you can see it on my web site on the Truck Mods page before Steve kills the site tonight :-( . I've gone with WranglerNW hardware: driver's side battery tray, relay and harness. I'm happy with the quality, instructions for install were clear, and no problems. Suppose you could get the driver's side tray from a diesel truck.

    was fun while it lasted, <A target="_blank" HREF=http://desertrider.coloradok5.com>http://desertrider.coloradok5.com</A>
     
  4. 1986Blazer

    1986Blazer 1/2 ton status

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    I'm planning to do the same - LMC Truck has the drivers side battery tray - Factory new

    www.lmctruck.com

    This site only allows you to order a catalog - you can also call 800-222-5664

    The cost for a drivers side battery tray is $29.95 - it will save you the time of searching junk yards!
     
  5. 2Dogs

    2Dogs 1/2 ton status Premium Member

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    I just completed my install with the NW Power kit. Very clean.
    Also GREAT wiring kit with fuses, battery lugs and toggle switch. I purchased the battery tray direct from the dealer - let me know if you need part # (I know I have it here somewhere...)
    I am running a high CCA AC delco as primary and a deep cycle yellow top optima as secondary.
    NW Power - (800)962-2616
    Good products, directions and customer support is value-add to me and NW has both.


    Dave

    "Visualize Whirled Peas"
     
  6. BlazerGuy

    BlazerGuy 3/4 ton status

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    Check out these articles from ORC:
    http://www.off-road.com/chevy/reviews/wranglerdb/

    Murphy's Laws on Life :
    "The longer you wait in line, the greater the liklihood that you are standing in the wrong line." [​IMG]
     
  7. txbartman

    txbartman 1/2 ton status

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    Thanks for the info. I tend to run the battery down while camping. First I need a bigger alternator, but after that is the dual kit. If nothing else for the peace of mind. I think the Hellroaring kit is the way I will go.

    85 GMC Jimmy, 305 w/TH700-NP208, 32X11.5 BFG ATs, 15x10 Eagles, Smittybuilt tube nerf bars and bumbers
     

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