Ok...so we did a test fit and a power up...the factory speakers sound at least 30% better off of this unit with the four channel amp...CRisp. Clear. Loud. the NAV IS AWeSOME....DVD AWESOME....Three screens playing video AWESOME!!!

the install has been a bit slower due in part that this was the first X5 that the installer had done....his experience was with 5 series mostly and was surprized how detailed and "tight" the X5 was in comparision.

Still having issues keeping the computer going. I have seen other post that discuss this problem, but of course when I have to deal with it I cannot find them, any way...we got the business CD out and the OEM head unit....the harness plugged right into the doubledin using a aftermarket adapter...that leaves only the data wire left.

We were going to mount under the seat and then feed the wire but on plugging it in the OEm head unit we got nothing...then we tried to plug into the back of the biz CD and there is an issue with the number of prongs....what am I missing...Please advise...I would like to keep this functionality.