HI all.  I'm new to this so I am a little on the cluless side LOL.  I'm trying to locate the wire to hook the "Reverse Gear Signal Input" to for the backup camera. I've read conflicting post. Any help would be Grately Appreciated. Also, I'm now getting a message that I hadn't seen before when I first start the truck. It says "Images may apear in reverse"  What is that all about ?

Thanks for your help and Patients.

D