Hey, everyone, how's it going Today, we're gonna be going over and showing you how to install the Amp Lock King Pin Lock, for Pullrite and Sidewinder pin boxes. So if you're wondering why you may be in the market for a coupler lock, for the King Pin box on your fifth wheel. Well, most of us, we store our fifth wheel at home, we don't necessarily have a lock storage unit to store the trailer in, or… see more >