I want 2 retrofit Bluetooth 2 my m3, I've seen many threads and how to do guides from hours of searching google but no one seems 2 have the same problem as me. My phone has had a Nokia kit fitted that I have removed and has a Motorola system in it from factory, during its life someone has been messing around with wiring and I'm trying to find a retrofit loom so I can start again or maybe someone that could point me in the right direction as what to do. I have the sat nav Mk 4, Harmon kardon and an mp3 changer I put in. I've had a nose under the boot trim and found it has a bm54 unit if that makes any difference. It also looks like a previous owner put a wire from the bm54 unit harness to somewhere in the front but I've removed it. I've already got a ULF and antenna ready to install, which says mit ses on it so I think its a voice command one? I'm loosing my mind here I don't know where to begin!