Question about a electrical plug

Discussion in 'Trucks [ Eighteen Wheelers ]' started by bserious, Aug 16, 2012.

  1. bserious

    bserious Bobtail Member

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    Aug 10, 2012
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    question about the electrical plug for the air dryer on my 98 fld120, what does the plug control.
     
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  3. bender

    bender Road Train Member

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    Jul 20, 2010
    Don't Kid Yourself
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    The heater element in the air dryer. It supplies the element power and ground.
     
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