389 Wiring help

Discussion in 'Peterbilt Forum' started by mwbton92, Apr 28, 2022.

  1. mwbton92

    mwbton92 Bobtail Member

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    Aug 26, 2021
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    I picked up a totalled 2012 389 a year ago from a buddy for cheap. Reasons being A) front end was ripped off the truck therefore having it wrote off and B) had no engine in it anymore. So seemed like a good idea to fix it and put in whatever motor I felt like would suit it. Of course I changed my mind about half a dozen times and ended up putting an n14 in it. Now I'm in the midst of trying to make a wiring harness for the engine and unfortunately don't have the factory harness from the truck as it went with the motor. I do have another deutsch plug end and all the pins etc but I need a pin out or schematic of the engine firewall connector (top plug on dr. side of firewall) so I can figure out what wire goes where. If anyone can help me out it would be more than greatly appreciated.
     
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  3. mwbton92

    mwbton92 Bobtail Member

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    Aug 26, 2021
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    Last 6 of the vin are 179889
     
  4. terryt

    terryt Heavy Load Member

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    Apr 27, 2009
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    kustoms trucks you need more then wiring that dash won't talk to that engine. they can make it happen
     
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  5. mwbton92

    mwbton92 Bobtail Member

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    Aug 26, 2021
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    Ya I'm not paying 5 grand for a harness I can make myself if I had a diagram. Ya I've got a translator box to make the dash work but I'm still needing a basic pinout of the firewall connector. The peterbilt dealer closest to me is useless and less than helpful in getting me the proper schematic
     
  6. RocketScott

    RocketScott Medium Load Member

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    Apr 10, 2013
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    I have some of the newer wiring schematics but not sure what years they cover
     
  7. mwbton92

    mwbton92 Bobtail Member

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    Aug 26, 2021
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    Worth a shot if you don't mind uploading them or sending me them, id greatly appreciate it!
     
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