The only step I still had to do, was to crimp a proper connector onto the wiring loom that goes to the e-Sound module. The e-Sound speaker can be reached from the front wheel well. Simply removing the small plastic cover gives you access to the speaker and its connector. From there, I removed the additional wires I added when the speaker was installed on its temporary location, crimped the pin terminals and inserted them into the connector.

The speaker wiring loom with the e-Sound speaker in the background.
The speaker wiring loom with the e-Sound speaker in the background.

This was a quick job, so not much to say about it.

part 1 - part 2 - part 3 - part 4 - part 5