2016 389 Firewall Fuse Panel Map

Discussion in 'Peterbilt Forum' started by Jennyspete, Mar 9, 2025.

  1. Jennyspete

    Jennyspete Light Load Member

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    Dealing with an after treatment issue. We narrowed it down to an electrical/ wiring issue. First thing to check was the fuse box but the map is missing. I found 1 fuse that has no power. I replaced the fuse but still no power so there is no power going to that location but I don't know what that fuse is for.
    I know all 389's are not the same but I thought I'd ask. This is the firewall fuse box. It's the 3rd from the left on the top row of fuses. 30amp. Can anyone tell me what that fuse is for?
     
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  3. JonJon78

    JonJon78 Road Train Member

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    This is a 2020 peterbilt 389 1741608078280537515710983123959.jpg
     
    Jennyspete Thanks this.
  4. Jennyspete

    Jennyspete Light Load Member

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    Is this the one on the firewall? Mine doesn't have that much in it.
     
  5. JonJon78

    JonJon78 Road Train Member

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    That's the kick plate fuse box. You looking for the one under the hood?
     
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