Fuse/relay panel location 98 kw w900l

Discussion in 'Kenworth Forum' started by irishluck09, May 14, 2022.

  1. irishluck09

    irishluck09 Light Load Member

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    Does anyone know the location of the relay box on a 98 kw w900? Me and my mechanic are trying to locate the relay for my engine fan and it's not located in the fuse panel thats by the clutch pedal.

    Or does anyone know the location of the engine fan relay?
     
    Last edited: May 14, 2022
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  3. Star Rider

    Star Rider Light Load Member

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    Open the gauge panel and switch panel to the right of your speedometer. The engine fan relay is in there. You will have to dig around to find it , not mounted , it just lays in there towards the bottom.
     
  4. ProfessionalNoticer

    ProfessionalNoticer Road Train Member

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  5. Oxbow

    Oxbow Road Train Member

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    I have a W900B that the former owner moved the fan relay to the upper firewall on the engine side for what it's worth.
     
    spsauerland Thanks this.
  6. irishluck09

    irishluck09 Light Load Member

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    We had removed the speedo/tach panel but didnt locate anything. So your saying behind the guage panel witht the temp sensors?
     
  7. irishluck09

    irishluck09 Light Load Member

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    Now how you gona say that when there is nothing that shows the physical location of this specific relay?
    Even with multiple phone calls to MHC kenworth, they didnt even know where it was located
     
  8. Star Rider

    Star Rider Light Load Member

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    remove the panels to the right of those , temp gauge panel and the switch panel next to it. Trust me the relay is there , it will be buried under a lot of air lines and wires
     
    spsauerland Thanks this.
  9. irishluck09

    irishluck09 Light Load Member

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    Sweet, Ill check that out in the AM. We had spent half a day looking even with phone calls to MHC kenworth with no anwsers on the location of that relay.
    WIll report back tomorrow. Thanks
     
  10. ProfessionalNoticer

    ProfessionalNoticer Road Train Member

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    It's called SIS. Fire your mechanic. Actually, my mistake. SIS is for CAT. This is indeed a KW diagram issue. If they can't find it by looking up your VIN than why not just run a new fused power wire and be done with it?
     
    Last edited: May 16, 2022
  11. spsauerland

    spsauerland Road Train Member

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    The diagram of the harness is no longer available K068-6648, but relay is part of the Cummins in cab harness. The fuse panel was designed before electronic engines, so add on harness were used for Cat, Cummins, or Detroit engines. I attached the diagram in your other thread. The diagrams calls out the wire #, color, and gauge. Find it that way. Most likely stuffed in behind gauges somewhere, been along time since I worked on one with a Cummins.
     
    Last edited: May 16, 2022
    ProfessionalNoticer, kranky1 and Oxbow Thank this.
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