I had the factory wiring so I bought the Dodge kit that had the switch, crossover wiring, and bezels. Easy install except, on the megacab, I had to remove the center console to remove the center instrument panel bezel to get at the screws to remove the instrument panel bezel plus had to remove the bezel under the steering column - LOTS OF BEZELS. The instructions said to get it flashed but I tried it and it worked and the fogs don't turn off when high beams are on. Now, I'm not sure I want to get it flashed since I don't want to spend $110 for the BriteBox Fogster to keep the fogs on.
Bob