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Thread: Plug for 15 pin diagnostic connector

  1. #1
    Join Date
    Oct 2013
    Location
    Austin, TX
    Posts
    25
    My Cars
    1981 320is, 1972 240z

    Plug for 15 pin diagnostic connector

    I have and E21 and early E30 that both have 15 pin diagnostic connectors. Does anyone know of a plug made to fit the 15 pin connector? I know there are adapters that the later 20 pin connectors, but the only thing I've seen to fit the 15 pin versions are the "reset tools" that are basically fancy jumper wires.

    Thank you.
    Last edited by txzaphod; 11-18-2018 at 06:24 PM.

  2. #2
    Join Date
    Sep 2016
    Location
    California
    Posts
    378
    My Cars
    FPV
    Check to see if these guys have them www.bimmerstuff.com/diag-tools/

  3. #3
    Join Date
    Oct 2013
    Location
    Austin, TX
    Posts
    25
    My Cars
    1981 320is, 1972 240z
    Quote Originally Posted by Southern740iL View Post
    Check to see if these guys have them www.bimmerstuff.com/diag-tools/
    Thanks for the link. The image for their diagnostic section has a looks like they only have a 20 pint to OBD-II plug tool.

  4. #4
    Join Date
    Jun 2023
    Location
    ABQ
    Posts
    1
    My Cars
    1986 BMW 325e

    BMW ODB 15 pin connector

    Quote Originally Posted by txzaphod View Post
    Thanks for the link. The image for their diagnostic section has a looks like they only have a 20 pint to OBD-II plug tool.
    There are no adapters for ODB1 to ODB2 as the protocols and software are different. So you would have to buy a very expensive scanner to work with an old
    BMW (like $700). If you just want to reset the oil change indicator stick a copper wire into 7 and 1 then turn the car on for 3 full seconds (4 if you count fast) and turn it back off. Do that for 12 seconds and it resets the service interval. 1987 and prior use a proprietary 15 pin semi circular connector and there is nothing reasonably priced to connect to it. 1987 325i's use the 20 pin connector the rest of 87 uses the 15.

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