My Z4 is a 2003. I removed the plug from the back of the radio as described but in the location where the aux input should go was a plug with 2 brown wires. I removed that jack and inserted the newly purchased aux input then reinstalled into radio. No power to radio, not even light up. So undid and placed the plug with brown wires back after much hand torture. No power, shit.....the radio doesn't even light up... Any ideas?? I would really like to use the aux input and have the radio work again. Help
Guidance appreciated.
Steve