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Thread: Wiring Harness differences

  1. #1
    Join Date
    Apr 2016
    Location
    GA
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    My Cars
    84 633

    Wiring Harness differences

    What is the difference in all the ECU wiring harnesses for an e24? I show bmw made a whole list of part numbers and wanting to know what all is interchangeable.

  2. #2
    Join Date
    Feb 2009
    Location
    Pittsburgh, PA
    Posts
    1,718
    My Cars
    '86 635CSi, '08 128i
    There's a lot of similarities in the BMW harnesses as long as they're the same revision of fuel system. Carb/Jetronic/Motronic. Most of the differences are for different locations of components. For instance, I have an E34 535i harness in my E24. I had to lengthen a few cables to the AFM and it's a bit tight at the DME. Most of the connectors were designed by Bosch and didn't change much over the E24 production run.
    Save the manuals!
    '08 128i 6MT, '86 635CSi 5MT (B32, Motronic 1.3, WBO2, G265, 18# FW, 3.46 torsen)
    Past projects:
    '96 318iS, sold 4/23 '90 535iM, RIP 1/23 '90 535iA RIP 6/22 '91 318i, sold 7/19 '97 M3 sedan, sold 11/18 '85 735i, RIP 2/18 '92 325iC, sold 7/16 '91 318iS, sold 6/16 '84 745i, sold 10/14 '82 633CSi, traded 9/12 '90 325i, RIP '87 325 sold '89 525i, traded '87 325iS, RIP

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