Here is what I ordered to install the mic.
84-31-6-938-762 BMW Part HANDS FREE TELEPHONE MIC
61-13-0-005-197 BMW Part BUSHING CONTACT (x4)
61-13-8-377-072] BMW Part UNIVERSAL SOCKET HOUSING
I just need to pick up about 10 feet of shielded cable.
Two pins that go into 1 and 6 on the head unit, soldered to the shielded cable, then soldered to the other two pins that go into the connector that plugs into the mic.
I found a local guy to code the head unit.
I'll post once I have the mic wired in.