Evening all, long time no post.

I have a 2007 E60 LCI and I want to do a genuine Bluetooth retrofit. (Small screen I-drive)
The only problem I see is that I can't find any loom for the TCU/MULF phone box thingy in the boot.
I have looked on the left side up as far as the back seat and no joy.
Is it normal for some cars not to have the loom or am I looking in the wrong place?
The only module in the foam block in spare wheel well is the PDC controller.