Re-pinning a Motronic 1.3 DME connector

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  • rogerscgreg
    Noobie
    • Mar 2026
    • 13

    #1

    Re-pinning a Motronic 1.3 DME connector

    I'm re-wiring my SpecE30, and in doing so, I'd like to re-pin the Motronic 1.3 DME Connector (55 pin). With that said, I haven't been able to find a reliable source for how to de-pin and re-pin the connector since it's so old.

    The only recent-looking product I could find is this:
    This Porsche 944S & 944S2 Bosch DME Motronic ECU Connector Kit will replace your brittle and old connectors and terminals.  PN: TRW-944-021Product Code: Bosch 1 928 401 304 Fits: Bosch 0 261 200 195Suitable for Bosch Motronic M1.3, M1.5, M1.52, M1.54 Suitable for Bosch Motronic MP5.1, MP5.2 , MP7, M2.5, M2.7, M2.10


    I believe they are JPT terminals, which can only be removed with a tool like this:
    Click image for larger version

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    This tool is $75 for some awful reason.

    Is there a cheaper tool to use, if this is even the right tool at all? What sort of crimper would I need? Does anyone have a video guide, or even a how-to with pictures?
  • reelizmpro
    R3V OG
    • Dec 2003
    • 9537

    #2
    I have depinned a few terminals on my DME harness but it's the early style used on 318i/325e/M3's...and not the specific 325i Motronic 1.1/1.3 harness. I didn't need to use any special tool, just a mini flat head. Check and see what kind of tool you can use as a substitute.
    "I'd probably take the E30 M3 in this case just because I love that little car, and how tanky that inline 6 is." - thecj

    85 323i M TECH 1 S52 - ALPINEWEISS
    88 M3 - LACHSSILBER
    89 M3 - ALPINEWEISS II
    91 M TECH CABRIO 2.7L TURBO - MACAOBLAU

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