I am new, but joined specifically to comment on this topic. I just installed the NavTV AllGig, AV harness, Video Switcher, and toggle switch. It can be a straight forward install, and works great with my manual transmission 2012 Rubicon.
I am going to sound like I work for NavTV (I don't), but they were fantastic. It arrived on time, and even though I had issue installing it they walked me through it all. The toggle switch allows me to keep the GPS speed, and everything works as advertised.
The best part was the support I got from Tony at NavTV. I made lots of mistakes and had a part that was working properly. NavTV replaced the part without question. Tony replied to every call and email in timely order, walked me through my mistakes, and showed amazing patience! He even called me from his home, on a three day weekend.
I don't know that lockpick has a unit yet for manual transmission, but certainly NavTV does, and I couldn't be happier!