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Wire harness ? in 1995 378 Peterbilt with Cat

Discussion in 'Trucks [ Eighteen Wheelers ]' started by kwforage, Jul 3, 2017.

  1. Jul 3, 2017 #1
    kwforage

    kwforage Road Train Member

    1,047
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    Jun 3, 2007
    Wisconsin
    0
    1995 378 with a 3406E. No jakes, no cruise. One or the clutch switch wires does not have continuity from switch back to ECM. Does these two wires go straight from ECM to clutch switch or do they route into the cab also? I am getting conflicting answers from different people. I am sick of not having cruise control and will part with the $800 for a new ECM to cab harness but want to make sure it will fix it and it's not a problem under the dash.
     
    kwforage, Jul 3, 2017
    kwforage, Jul 3, 2017
    #1
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  3. Jul 4, 2017 #2
    ClineER

    ClineER Light Load Member

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    Apr 27, 2016
    N.E. Oklahoma
    0
    If you click on the truck forum at top and go to peterbilt forum there are links to get schematics for petrrbilts at the top of page. But if memory serves correct wires run under cab from clutch switch to ecm
     
    ClineER, Jul 4, 2017
    ClineER, Jul 4, 2017
    #2
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