Ken Thompson Posted September 12, 2022 Share Posted September 12, 2022 Has anyone removed their 2001 Cummins ISC and replaced it with a newer ISL 400 with the common rail fuel system? I’m fairly sure the intake and exhaust will all adapt. My main concern is if my 2001 wiring harness will plug in to the newer ISL ECM and work correctly. Frank cleared up the wiring change that will be needed when changing from the pacbrake to the 2 stage jake brake. I know the newer ECM will need to be programmed to the existing Allison MH3000 trans. Any and all comments are appreciated. Link to comment Share on other sites More sharing options...
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