Radar detector mirror jumper connector
 

I have the mirror mount and jumper, but there is no plug behind the mirror as per the instructions. 2014 coupe, 3LT. Any suggestions?

You have to pry the small plastic cover off the back of the mirror post to access the wiring connector. Search for "mirror tap" and there are a couple of good threads here with pictures.

You do not have to take the large PDR cover off, and you do not have to take the wiring connector apart, just pull a little slack down out of the roof area and turn it sideways to access the purple and black wires going into the top of the connector.

Thanks, the pics were really helpful along with a very good explanation.