[romero1990]

If I am going with coding route, do I still need route the mic cable? (I have CIC with BT)

Also if I keep the cables in, will I be able to code the CIC? I think I would just install it first then find a coder to set the codes. I don't mind opening it up twice.

"The iDrive extension cable does not work for everyone. I recommend removing it entirely, the Carsara box should pick up the iDrive signals directly from the Quadlock (labelled L#->B#). The white jumper terminator loop (D#) should be removed entirely. Note: You will not able to code the CIC headunit after this change is made. If you wish to try the iDrive connector, connect it to your iDrive controller, then connect it to either A# or B# and see if your iDrive menus respond. Multiple people have responded that they may have faulty harnesses, but it is not clear and is not needed.
"