any specs? of the system you want to install? are you wanting the camera to come on when you put the truck in R? Or are you just going to always have it on so you can flip to it at any time while you drive? What kind of Camera is it?
I've done a system with a Kenwood DNX890 and a Sony camera. The time consuming part is camera install and running wires to front. Basically an RCA video cable and single reverse wire tapped into reverse light. Pretty much plug and play.