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Fusability.....

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Ditusar, Apr 23, 2001.

  1. Ditusar

    Ditusar Newbie

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    Can someone kindly enlighten me to the location of my <font color=red> fusible link(s)</font color=red> ????

    79 K5 Blazer, 400SB, TH350
    4" + 3" lift, 35" Ground Hawgs
    75000 Original Miles
     
  2. Blazer_Boy

    Blazer_Boy 1/2 ton status

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    Facing the front of the engine, it should be to the right of the distributor, up, and mounted to the fire wall. Its basically where two big red wires meet.

    [​IMG]
     
  3. Leadfoot

    Leadfoot 1/2 ton status Premium Member

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    I believe what Blazer_Boy is referring to is know as a ballast resister, where-as the fusible link is located in the harness down by the starter. If you follow the wires from the starter you will see a bulge (you may have to seperate the harness in order to see this) made of what looks like hard plastic. That should be your fusible link. Please correct me if I am wrong.
     
  4. HarryH3

    HarryH3 1 ton status Author

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    You won't find a ballast resistor on an HEI equipped GM vehicle. They don't use one.

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://ThunderTruck.ColoradoK5.com>http://ThunderTruck.ColoradoK5.com</A>
    It's a great day to be alive...
     
  5. Leadfoot

    Leadfoot 1/2 ton status Premium Member

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    HarryH3, what is the item on the firewall that was spoken about before? I have a 1980 K20 with HEI ignition, and have the "item" on the firewall with two wires going to it. It has two studs, one on each end and one wire (with ring terminal) is connected to one end, and the other wire (with ring terminal) is connected to the other side. When I asked GM what it was, they told me it was a ballast resister???? Not that some mechanics don't know their a$$ from their elbow or anything 8&gt;)
    It also has a fusible link down by the starter. I know this because I saw it when I put my new starter in.
     
  6. HarryH3

    HarryH3 1 ton status Author

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    There is a power distribution post on the firewall. The black plastic thing with a screw in the middle? It has several wires connected to it. That provides power to things like a power tailgate, hi-speed ventilation fan, etc.

    Your description sounds like some kind of circuit breaker. I'm not sure what that could be on there for. None of my K5's have had such a thing. But as far as I know, HEI systems have never come with a ballast resistor. They run at the full 12 volts all the time.

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://ThunderTruck.ColoradoK5.com>http://ThunderTruck.ColoradoK5.com</A>
    It's a great day to be alive...
     

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