I recently installed the same unit in my wife's X5. I have the same LED back lighting problem that you have. I'm going to take it back out and try to figure out the problem. Just wondering if you have found what the problem is? Also, I noticed that in your first pic you said you did not have DSP. My wife's X5 does not have DSP either. I ran the extended wiring harness back to the connector next to the battery for the radio and have sound at all speakers. I think you only need to splice into the amp wiring if you have DSP. Anyway, any help you can give would be appreciated.