^^x2 on the relay and the large guage wire. I made the mistake of doing mine with 10g, 12g is adequate, and for some reason a whole lot cheaper (at least where I am you can get 100' of 12 g for the same price of 50' of 10g...) I used a two relay system to wire mine to the high beams, works great. Also, depending on the lights you have, there may not be enough room if you mount them directly to the bumper. I had to use some eye bolts to mount them about a 1/2 out so the back of the lights didn't hit the grill. Don't worry about the airbags.