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1998 FLD120 Jake brake wire numbers

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by JoeyJunk, Oct 14, 2022.

Page 2 of 3
  1. Oct 16, 2022 #11
    jamespmack

    jamespmack Road Train Member

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    I'm jumping around. But the 30 pin your schematic is showing is on the ecm.

    Stand looking at the ecm, engine wiring is in the left. OEM cab is on your right, or towards cab. Big connection is 30pin.
     
    jamespmack, Oct 16, 2022
    jamespmack, Oct 16, 2022
    #11
    singlescrewshaker and Rideandrepair Thank this.
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  3. Oct 16, 2022 #12
    JoeyJunk

    JoeyJunk Road Train Member

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    It is turned on in the ECM and were functioned at the rebuild shop. Just need to figure out in cab wiring. Two plugs are present but were just hanging in dash. O had to get a panel with switches from the junk yard. The plugs aren’t the typical jake plugs. Thats why I need numbers to verify what I got. It’s annoying lol.
     
    JoeyJunk, Oct 16, 2022
    JoeyJunk, Oct 16, 2022
    #12
  4. Oct 16, 2022 #13
    jamespmack

    jamespmack Road Train Member

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    I do not have actual diagrams. Do you have the diagram on the back of the wire distribution panel?

    If not I could pop dash out and get a numbers late today or tomorrow.
     
    jamespmack, Oct 16, 2022
    jamespmack, Oct 16, 2022
    #13
  5. Oct 16, 2022 #14
    JoeyJunk

    JoeyJunk Road Train Member

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    I do, but it has nothing for the jakes. I assumed because the truck didn’t come with them. Just my guess.
     
    JoeyJunk, Oct 16, 2022
    JoeyJunk, Oct 16, 2022
    #14
    jamespmack Thanks this.
  7. Oct 16, 2022 #15
    Rideandrepair

    Rideandrepair Road Train Member

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    I can’t see any numbers on the wires. Here’s a picture of the switches/plugs. Only 2 terminals on the switch. Sockets missing up on my 4 cyl plug. If you’ve got everything, and plugs look the same, plug them in. One is for 2 cyl. Others for 4 cyl. Both on together for all six. Makes it a 3 stage.
     
    Rideandrepair, Oct 16, 2022
    Rideandrepair, Oct 16, 2022
    #15
  8. Oct 16, 2022 #16
    JoeyJunk

    JoeyJunk Road Train Member

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    No picture came through.
     
    JoeyJunk, Oct 16, 2022
    JoeyJunk, Oct 16, 2022
    #16
    Rideandrepair Thanks this.
  9. Oct 17, 2022 #17
    Rideandrepair

    Rideandrepair Road Train Member

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    B1578B8B-5735-405C-80AE-5221AA3363A8.jpeg
    Oops
     
    Rideandrepair, Oct 17, 2022
    Rideandrepair, Oct 17, 2022
    #17
  10. Oct 17, 2022 #18
    JoeyJunk

    JoeyJunk Road Train Member

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    This is what I have. One has 3 terminals other has 2. I bought what you have @Rideandrepair to hook up to the switches in dash. Was hoping the other ends would be plugs as well but they are not.
     

    Attached Files:

    JoeyJunk, Oct 17, 2022
    JoeyJunk, Oct 17, 2022
    #18
    Rideandrepair Thanks this.
  11. Oct 17, 2022 #19
    JoeyJunk

    JoeyJunk Road Train Member

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    First pic is what I have which I still don’t know what they are for. Second and third is the new harness that I hope to use. Just need to know where it goes. May break down and have the guy do it.

    2794E282-9E70-4626-B064-D81CE50B5C1D.jpeg C727B1DC-6E98-40B7-94EF-BD80AF3C356A.jpeg 8995DE07-51F4-4017-AC36-3F8ECE752280.jpeg
     
    JoeyJunk, Oct 17, 2022
    JoeyJunk, Oct 17, 2022
    #19
    Rideandrepair Thanks this.
  12. Oct 17, 2022 #20
    JoeyJunk

    JoeyJunk Road Train Member

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    If anyone wants to post a pic of the wiring diagram that @jamespmack is referring to I can check the wires that I found and maybe identify them.
     
    JoeyJunk, Oct 17, 2022
    JoeyJunk, Oct 17, 2022
    #20
    Rideandrepair Thanks this.
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