We don't maintain a specific list of installers, and that's because we're a small company and maintaining a "fresh" list of shops is simply outside the scope of our resources currently. However, here's a list of independent BMW mechanics throughout the U.S. -- nearly any company on this list should be able to perform the installation. Just fine one that's near you!
If you can't find an installer that's convenient to you, the great news is that because our products are incredibly easy to install, and they are intended for the end user to install (not a car audio shop), virtually any place that works on cars can perform the installation. You could take the car to your local mechanic, the BMW dealer, or even any well-regarded local car audio shop.
We also provide extremely detailed instructions, so even if whoever performs the installation isn't familiar with the car, they'll be able to handle it!