[BirdDog]

The harness coming from the radio should terminate in a connector that slides into and locks to a square white nylon part that locks into a square hole in the roll bar on the passenger side of the car. The speaker harness then plugs into it there. This allows the rear speakers to be disconnected/reconnected quickly when removing the rear shelf.

The parts are all (speaker side connector/radio side connector and the white nylon part) BMW parts. The radio side harness was supplied by the guys who made the radio (Becker AutoSound LLC). You should still be able to order a replacement radio harness from them, but it's not cheap ($79 including shipping!) and I don't recommend doing that.

Instead, I would bring your broken connector (which should have a BMW part number molded into it) to any BMW dealer and they should be able to match it up and give you another as well as the pins you'll need to reattach the ripped out wires. BWM used those connectors and the white nylon part for wiring harnesses that ran down the center consoles of many different BMW models. The connectors and the white part are cheap, just a few $ each. If you don't already have one on your rollbar, make sure you get the white nylon part to attach the radio side harness to the rollbar. It will keep it out of the way from being ripped again by your convertible top. The BMW part number for the nylon part is: 61-13-1-378-997 (2035HBRACKET) and cost (when I last bought one) $3.67.

As far as which wire goes into which slot in the connector, I'll try to dig that up for you.