well the sync system aint going to work without microphone, but i got the phone option on the nav to work after i plug-in the sync thats why i am see if anyone ever replaced there mirror on here or did an upgrade, i wouldnt recommend trying this since it may not work on your vehicle, i just had luck...so i dont want to to be responsible for any damage

i plan on doing this to my explorer after i find out if a mirror of 7-pin can be upgraded to 10-pin connection mirror w/microphone