Results 1 to 5 of 5

Thread: Instrument cluster

  1. #1
    Join Date
    Dec 2011
    Location
    Edmond, OK
    Posts
    358
    My Cars
    00 MRoadster '83 745i,

    Instrument cluster

    Over the years, I have had maybe 2 to 3 dozen e24, e28 and e23 instrument clusters apart for various parts replacement or repairs.

    I have NEVER had an issue pulling the little black plastic plug out of the tachometer before this afternoon. I am home with Covid, so have some time to catch up on some non strenuous projects. Instrument cluster is about as non strenuous as it gets.

    So this plug would NOT come out without some serious force. I finally got it, but one of the "s" shaped connectors ended up coming part way out with it. I was able to bend it back close to its original shape with some small needle nose pliers. Have a couple of questions;

    What the hell is the purpose of this plastic plug. I don't see that it does anything other than hinder removal of the tach from the rest of the instrument cluster. Does it push those connectors to make contact with something else? I didn't take the tach apart any further. Secondly, has anyone ever put a cluster back in without this plug? If so, what was the result?connectors.jpgclip.plug.jpg

  2. #2
    Join Date
    Mar 2007
    Location
    Quadratechtown, PA
    Posts
    741
    My Cars
    5, 7, 4x4
    It is a coding plug. Got no idea what it codes.

  3. #3
    Join Date
    Dec 2011
    Location
    Edmond, OK
    Posts
    358
    My Cars
    00 MRoadster '83 745i,

    Coding Plug

    I think you are correct. I see how it works now. All ten of the metal tabs make contact with the printed circuit board. When you install that plug, it breaks continuity on three of the tabs. The other seven make a connection through the rectangular holes.


    clip.plug.jpg

    - - - Updated - - -

    try this pic.

    codeplug.jpg

  4. #4
    Join Date
    Jun 2010
    Location
    TX
    Posts
    4,487
    My Cars
    1983/84/85 745i
    Ah, learn something new daily.

    I guess it helps code the fuel efficiency meter and tach. Say low RPM like the Eta, modest like ours, or higher like the M cars.
    I make E23 parts.
    09/1983 745i (stolen spring '13 around Houston, TX Achatgruen on nutria buffalo. 8481080)
    10/1984 745i
    11/1984 745i
    11/1984 735i (10:1-265/6)
    Ford, MB, and GM round out the pack.



  5. #5
    Join Date
    Mar 2023
    Location
    Georgetown Texas USA
    Posts
    1
    My Cars
    1983 745i
    Erik aka

    Hit Man X I live in Georgetown TX will you please contact me, I was a young engineer on the E 23 B 106 platform and still have the car I bought new in 1982
    kent_goldy@yahoo.com

Similar Threads

  1. INstrument Cluster Question
    By mrdoenutz in forum 1991 - 1999 (E36)
    Replies: 0
    Last Post: 09-24-2001, 09:56 AM
  2. Help removing instrument cluster
    By adc in forum 1992 - 1999 M3 (E36)
    Replies: 10
    Last Post: 07-21-2001, 11:27 AM
  3. Dead Bug in Instrument Cluster
    By ///MD in forum 1992 - 1999 M3 (E36)
    Replies: 1
    Last Post: 04-07-2001, 07:54 AM
  4. Instrument cluster
    By TYE in forum 1996 - 2002 Z3 (E36/7, E36/8)
    Replies: 3
    Last Post: 03-24-2001, 11:32 AM
  5. changing instrument cluster bulb
    By 94_325is in forum 1991 - 1999 (E36)
    Replies: 4
    Last Post: 03-04-2001, 03:20 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •