Generally, wireless cameras work almost as well as wired cameras, and even have some added benefits. Because there are no wires to worry about, the lifespan of wireless cameras can be longer than that of wired cameras depending on the environment you use your RV in most. You also don't need to worry about running wires from your dashboard to the rear end of your RV. Camera quality can be glitchy if you have a longer trailer, so keep that in mind.