I recently purchased a 2011 F350 with the factory navigation system. I also have the factory rear view camera. I would like to add 2-3 additional cameras that would be on a horse trailer (1-2 inside & the 3rd on the rear of the trailer). I have read several threads on the "lockpicks" and how it doesn't allow for additional cameras when using the factory camera. I would like to keep the factory camera, so this may not be an option although I like what "lockpicks" gives you. Question I have is could I use the upfitter switches to toggle the camera signal going to the lockpicks so that I could always view any camera? I appreciate any help that is offered!