Dash switches

Discussion in 'Questions From New Drivers' started by Mr8353, May 16, 2022.

  1. Mr8353

    Mr8353 Bobtail Member

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    May 15, 2022
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    Just bought a new 389 and wondering what these 2 switches are for. Nobody at the dealership knew. My build sheet said spare EOA switch. When I activate them, the switch lights up, but I’m not hearing any air actuation.
    See pic. 87164CDE-76B8-4F2D-BBAD-292731C83AFD.jpeg
     
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  3. SmallPackage

    SmallPackage Road Train Member

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    With the way things are spoken, written, and read, nowadays. The makers probably thought the switch production order said to print “air” instead of “spare”.
    Then of coarse no one in quality control cares to correct it when they see it anymore.
     
  4. kranky1

    kranky1 Road Train Member

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    Probably spares for a lift axle or pto control. Look on the back of the switch, they probably have a wire pigtail to nowhere on the back of them.
     
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  5. Long FLD

    Long FLD Road Train Member

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    See if they’re hooked up behind the dash or only the power wire that lights the switch up. If they’re hooked up then go on a hunt to see where the solenoids are located.

    But the easiest thing would be to look it up by VIN and see what they are.
     
  6. Kyle G.

    Kyle G. Road Train Member

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    How could the dealership not know???
     
  7. TruckerPete1990

    TruckerPete1990 Road Train Member

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    Gentry Arkansas
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    They are Spare electric air switches for example if u wanted to add a Air over ride on air bags u would just buy a Electric air shut off / open and wire it to that switch. Some trucks are even called Aux
     
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