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underhood junction diagram?? anyone??

Discussion in 'The Garage' started by uglychevyZZ4, Feb 7, 2007.

  1. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    I need a diagram of the underhood side of the fusebox junction. my haynes wiring diagram dosnt show all the wires i have to run (bought truck, most were cut off or hooked up wrong).. anyone know where i can see one? i need to know what each wire goes too.
     
  2. merace19

    merace19 1/2 ton status

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    Autozone.com has all of them freeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
     
  3. dyeager535

    dyeager535 1 ton status Premium Member

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    One option is to go to the wrecking yard and look for a good one. Pretty common to find them, in good shape is another story of course, but thinking of connectors, and where what goes, it's pretty easy to just unbolt those connectors at the firewall and swap them.

    Just an idea. Autozone's stuff MIGHT work, but last time I looked at them they seemed to be generic like the Haynes. Sometimes "81-87" is fine, sometimes its not, like our trucks lol. Wiper wiring for instance.
     
  4. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    yes D, theres sucked and mines all in one piece, just that for alt/starter/batt/ign shows less wires than my truck has coming out of the junction!! also, it says ONE red wire, well, I have THREE :doah::doah:
     
  5. dyeager535

    dyeager535 1 ton status Premium Member

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  6. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    78' GMC High Sierra K20
    NON A/C
    AUTOMATIC
    NON CALI-EMISSIONS..

    whats killin me is: out of the junction (fusebox connector on the firewall) i have 2 large Guage wires
    1. bright red
    2. reddish purple (faded red?)
    BUT... book only shows one that goes to the block connector over the distributor on the firewall...:doah:I dunno which one is that one.. and then, WTF is the other one? I have identified the smaller purple starter wire for ign so i know its not that, and all the distributor wires are hooked up so it isnt those. .. :crazy:
     
  7. 5280k5

    5280k5 1/2 ton status

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    Let me see of this picture will upload for 'ya. Unfortunately Alldata won't go back past '82 but I think this has the red wires you're talking about in it.
     
    Last edited: Oct 4, 2007
  8. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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  9. 5280k5

    5280k5 1/2 ton status

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    Check your email:D Are you not a member or am I just doing something wrong to upload a picture? Can anyone else see it?
     
  10. uglychevyZZ4

    uglychevyZZ4 3/4 ton status

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    i didnt renew this year as i was chevyless til sunday :D
     
  11. Confedneck79K30

    Confedneck79K30 3/4 ton status

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    i see it...
     

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