Need a 3rd TV camera for my truck for rearward views of a towed trailer.

Is the video output of vehicle cameras compatible with a Dell Inspiron flat screen ? is there a standard for communications between units ?

The Dell sits on a plywood table from dash over doghouse to the metal cargo/cockpit divider wall. Dell runs Garmin and Streets and trips...going around and thru LA is a snap. However, LA sports some wicked arterial intersections where rearward cameras are a large safety component.

Are wireless camera/screen units equipped with frequency adjusters so a second and interfering signal can be tuned away from with a frequency adjuster ?

other suggestions and info welcome.