Peterbilt 579 2018 spare switches

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Brandon0928, Feb 22, 2023.

  1. Brandon0928

    Brandon0928 Light Load Member

    184
    105
    May 14, 2022
    0
    I have 4 spare switches. One of them lights up when you flip it. Others do not. Do you have to take the dash apart to hook something up to them ? I thought maybe they had run wires by either box but don’t see anything it
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. RustyRod

    RustyRod Light Load Member

    69
    104
    Feb 14, 2021
    0
    They do have juice in them most of the time. My truck is a 2016 and had power to the spare switches. I heard is a factory option.
     
  4. vaseag

    vaseag Bobtail Member

    2
    0
    Sep 24, 2022
    0
    did you found the answer ? couldn't find pigtail under the hood
     
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.