Overall, it was a fairly straight forward install. The main thing was to prep the trailerside for the new lamp by removing the remaining sealant and adhesive. After that, its just a matter of soldering some wires and drilling some new screw holes. The color coding on the wiring on the new lamps matched that of my TT, so it was just a matter of white to white, green to green, black to black.
The only only thing was to position the lamp to cover the 4 screw holes left behind from the old lamps, as well as the hole where the wires pass through. One hole, the inside top corner, isn't covered by the lamp itself, but it able to be covered by the sealant when you seal the light after its installed.
Bottom line, a worth while way to spend a couple of hours @ the camp site!