I have the earlier 760 . I mounted the camera on the 5ers rear bumper running the wire ( has about 50ft & you splice it to transmitter) along the frame with screwhead zip ties. I maybe should have put it in Armor Flex conduit but no problems in over 4 years. I came up in my propane closet and attached sender there on the outside with power comeing from a toggle switch mounted by my auto level control. Our 5er is a 321RLTS about 35 ft & TV a crew cab dually Chevy . I saw a post a few days ago someone mounted camera at roof line and ran cable across roof but don't remember sender location
If there is lag time I'm unaware. I still really use my mirrors for backing mostly but do use for reference. Sometimes use it going down the interstate when I think an idiot is sniffing my rv bumper like a dog.
2012 Chevy duramax dually