u/leonnsfw

Hey everyone,

I'm planning to retrofit paddle shifters onto my 2008 BMW E90 325i Automatic (pre-LCI).

My current factory setup is the basic steering wheel without any multifunction buttons (non-MFL). I am buying a used steering wheel that already comes with paddle shifters and MFL buttons, and I plan to bring it to an independent shop or BMW coder for the installation. (In Germany or Switzerland)

Since my car doesn't have the factory wiring for shifters:

1. Which retrofit harness is recommended for a 2008 pre-LCI model (e.g., BMS / Burger Motorsports)?
2. Do I need to buy any additional small parts, pins, or adapters, or does the harness cover everything needed to tap into the shifter box under the center console?
3. Is coding strictly required, or is it plug-and-play once the harness is connected?
4. Do you know any places in Germany or Switzerland that can do this for me?

Thanks in advance for your help!