Thanks so much!!!! I'm getting a better understanding.

Since I have a Sept 2003 build, I don't need a second antenna right?

I basically don't have to worry about the 993 and just get the 84 21 6 955 522 right?

I understand I will lose the Assist feature, but I have a cell phone, so I don't really need Assist.

I asked my dealership and they quoted me $900 to $1000 for the part and installation. They said it would take three hours. Has anyone done this on a September 2003 build X5? maybe you can help me.

I talked and emailed people that have done this, but got confused because others have gotten the snap in adapter. I don't have one availbe for my phone.

I read that this part is only 84 21 6 955 522 $355 is that true?