I had the same issue. It actually twists into place. So start with it facing 30 or so degrees cocked to the side, insert back into the receptacle, then twist it with some force back into place. You'll know when it's seated.So I was trying to take off my rearview and put it upside down, but the stalk came off the header. Anybody have this happen? and if so have the key to getting it back on? Thank You
Sorry just realized I put this in the wrong forum.