I have a 2008 Mini cooper s sidewalk edition with HK stereo system. I'm installing and aftermarket stereo as shown below. I also purchased wiring harness to make life easy. I've wired the harness to the stereo, but I get no audio sound. I've install installed a speaker to the stereo to make sure it was not the stereo. That speaker worked. It seems like I'm getting power to the amp is the only thing I can think. Anyone know which wire feeds power to the amp?

 

The HK system is very different from a typical radio and amp setup, in both wiring and integration with the factory head unit. This is supposed to solve the problem. https://www.hkenabler.co.uk/