1. Is there a way to add length to this so that it works with a 40' 4th wheel?
Ours is 40'6" and I have about a foot left over
2. Has anyone here purchased this and did you have Ford install it or an RV shop?
I installed mine, but our RV dealer offered.
3. If you bought this and you have an RV longer than 35', did you need to add wiring etc. to allow it to function?
See answer to #1
4. Satisfaction level with the camera and tire monitoring system
I Like it. To make it an observation camera I bought a module from NavTV and it turns it into an observation camera, sets last camera view to the new default (great for hitching). With this I have 2 fewer monitors on the dash.
https://navtv.com/products/NTV-KIT899/cod-f50.html