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uhh...wire question.

Discussion in '1982-Present GM Diesel' started by yunit, May 6, 2005.

  1. yunit

    yunit 1/2 ton status

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    Ok, anyone know what the Yellow/Black wire that connects to a Black/Green wire is for and what it goes to in the engine compartment? :confused:
     
  2. diesel4me

    diesel4me 1 ton status Premium Member

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    could be...

    The low coolant sensor in the overflow tank for the radiator has a yellow wire with a black stripe on my 82 K20...my wiring diagram book doesn;t show it going to a black/green wire though--maybe other years had different colored wires.. :crazy:
     
  3. yunit

    yunit 1/2 ton status

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    When I pulled the engine, it was connected to an engine ground, but was a trimmed wire that was just sandwiched between washers. I don't think it is a ground because the old owner was an asshat that did not know what in the hell he was doing.

    BTW - This is on an 89 engine with emissions.
     
  4. diesel4me

    diesel4me 1 ton status Premium Member

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    hmmm

    Well,on my truck and the wiring diagram its showing a black/yellow wire as the low coolant sensor wire....GM didn't change the harness much as far as colors,so my 83 diagram should be close at least...maybe the previous owner thought it was a ground wire because it was black..anything is possible!...it looks like that wire grounds the "low coolant" bulb according to my wiring diagram... :crazy:
     

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