Unfortunately, my mirrors had the ribbon (the M3 mirrors had the pins), so there was some serious work that had to be done to make them fully functional. But I had a guy, Shane, owner of Euro Auto Spot, who did it for me. The guy is a magician with these cars. My mirrors work perfectly. Fully functional. If I had to pay for that work, sheesh, I have no idea how much someone would have charged me to do it. Indeed, I likely would have passed and just left them in a nonworking mode.