I think the Uconnect harness is grey, remove from radio and you just plug it into the Lockpick harness connector and then the lockpick harness will have a connector to go to the radio. The Lockpick is the middleman. The other harness should be white which is all the other radio connections, camera and such.
Uconnect - to lockpick - lockpick to - radio
There is an update for your radio with some improvements and a change to the black screen, Version 50.