you could be cheap like I was here, I got a 50amp diode from radio shack, and put them on the low and high relay. Look at your fuse box cover for the low and high relays, when you find them, Stick one end of the diode in the 85 of the low beam relay and the other end (grey band should face passenger side of truck) in the 85 part of the highbeam relay. The 85 part is the right bottom corner on both relays. I have done this and its fantastic. You could go one further and do the same thing to the fogs, I did, but its a PITA to jam 2 diode ends in the highbeam relays. If you need more help, I can put pics up.