What is this thing zip tied to my mirror?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Davis42200, Nov 27, 2024.

  1. Davis42200

    Davis42200 Bobtail Member

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    Peterbilt 348. No idea what it is or what it does.
     

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  3. JonJon78

    JonJon78 Road Train Member

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    Mirror heat possibly?
     
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  4. Davis42200

    Davis42200 Bobtail Member

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    Nope. It just next to the tubing. Doesn't look like he has anything to do with the actual mirror
     
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  5. 062

    062 Road Train Member

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  6. Ridgeline

    Ridgeline Road Train Member

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  7. Davis42200

    Davis42200 Bobtail Member

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    Oh for the dash reading?
     
  8. Goodysnap

    Goodysnap Road Train Member

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    Outside air temp sensor. For dash display and ECM reading depending on the truck and engine.
     
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