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Loose wire identification

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by johnny reb, Aug 3, 2005.

  1. johnny reb

    johnny reb 1/2 ton status

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    Please help me identify these wires. These wires have been just hanging around unconnected since I bought the truck 7 years ago.

    Picture 1 - This 2-prong connector comes from behind the distributor near the oil sending unit.
    Picture 2 - This wire comes down along the valve cover on the drivers side.
    Picture 3 - This wire comes down along the valve cover on the passenger side.
    Picture 4 - These 3 wires come from a grommet on the passenger side firewall.

    1.jpg

    2.jpg

    3.jpg

    4.jpg
     
  2. ColAdo82K5

    ColAdo82K5 1/2 ton status

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    Number3 is for your electric choke on the carb.
    Blake
     
  3. dyeager535

    dyeager535 1 ton status Premium Member

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    #4 looks like a knock sensor connector, and then there is a ground and fusible link.

    Truck probably had ESC, thus the knock sensor. (or it was a CA truck with CCC) Ground wire might be part of that system, but that fusible link wiring, I don't think those were used on anything other than the ignition, and should be between the starter and firewall, should be two of those wires.
     
  4. johnny reb

    johnny reb 1/2 ton status

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    If you look closely at picture 3 you'll see another wire laying across the valve cover. That was the wire that was on the electric choke on my rochester q-jet. My q-jet only had one wire connected to the electric choke. I don't think the wire I'm trying to identify is for the electric choke. It's not quite long enough to reach the electric choke.
     
  5. sweetk30

    sweetk30 professional hooker Premium Member

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    if your profile stuff is correct 86 k5 blazer. this will be emisions stuff or tbi stuff possible.
     
  6. R72K5

    R72K5 Banned

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    well 86 weren TBI, so its gonna be ESC/EST stuff(48 state federal) or CCC stuff(cali and the 50th state) ?

    i cant see your pics worth a damn they are too dark


    good luck
     

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