Only 4 Control modules show on my 2008 Audi A4 3.2 quattro

For the last several years I have been unable to connect to more then 4 control modules on my car. I recently discovered that an aftermarket quad lock wiring harness to add a factory Bluetooth module was the problem, as soon as I unplugged the microphone I was able to communicate with every module I was expecting to have. Best guess is the microphone was causing an issue with the L-wire that the modules use for communication. Hopefully this helps some poor soul in the same boat as me.