Today, on a 2013 Infinity JX35, we're going to review and install the upgraded, heavy duty modulite. Part number 119190KIT. Let's go ahead and cover the parts that come with the kit. First off, this is our heavy duty modulite from Tow Ready. How the modulite works is that it takes a signals from the vehicle, copies them with inside the box and then takes those signals using battery power and sends… see more >