It is in the pictures, positioned diagonally across the 'speaker' opening in the dash, next to the vent opening.

The gong has two functions, one as a notification for the OBC and second as a safety notice.

The OBC uses the gong to indicate a temp below 1.5°C (the unit in the US measurement system converts the Metric numbers) and to indicate exceeding the max mph (if this function is turned on).

The safety aspect of the gong is for a key in the ignition (after the key has been turned as BMW was smart enough to realize that if one puts the key in then one knows. Additionally, it is for seat belt warning.

Both of these gong functions are connected to the OBC relay box under the steering wheel. Need any more ifo on the gong, oh the colors for the wires. Well heck my 83 733i ETM will not be good for that, so from the 86 535i ETM, the wires are: Red/White with Brown/Red and Red/White, Brown and Brown/Blue in the second connector.


Keywords: chime module

• Removing the dashboard from an '86 735i (pic) - davidc 2004-08-26 23:26:04 (6179 views)
  • Sorry, but this is precisely why I sold my L7 (more) - MarkD in NJ 2004-08-27 12:07:24 (795 views)
    • Its a lot of work, to be sure, but now I should have a good system - davidc 2004-08-27 12:11:07 (582 views)
      • If my car was in the shape yours is AND a 5-speed, I would've done it. (e) (nt) - MarkD in NJ 2004-08-27 14:13:37 (535 views)
  • This is the point that I am at too. - luquette 2004-08-27 10:32:58 (443 views)
  • Looks like an explosion at a spaghetti factory - all those wires!! - philipuk 2004-08-27 03:18:14 (587 views)
    • That's a pretty accurate description! - davidc 2004-08-27 12:09:34 (516 views)
  • Where were you 4 years ago when I did this? - kff 2004-08-26 23:35:01 (487 views)
    • Funny you should mention that. I don't have a gong in my car. - davidc 2004-08-26 23:38:11 (486 views)
      • Re: Funny you should mention that. I don't have a gong in my car. - dave88te 2004-08-27 09:56:41 (447 views)
        • Nor when I leave the door open or the seatbelt unfastened. (nt) - davidc 2004-08-27 12:06:21 (446 views)
      • It is the thing that you needed to disconnect from the dash - kff 2004-08-26 23:51:42 (641 views)
        • Ah, so that's what that is. I reconnected it when the dash was reinstalled, but - davidc 2004-08-26 23:59:24 (484 views)
          • i rigged it so it would gong only from temp and max speed - Kevin Elmore 2004-08-27 18:37:55 (411 views)
            • how did you get it to - dave88te 2004-08-31 21:00:55 (419 views)
              • Unplug the 2-wire connector on the gong as it is> - kff 2004-08-31 22:37:36 (430 views)
                • sweeeet. (nt) - dave88te 2004-09-01 11:03:21 (353 views)
          • Check the other ends of the wires and see if it connected. (nt) - kff 2004-08-27 00:09:49 (424 views)