I just bought 4 100w lights for my truck and put them on the grill guard. However, I am not a electrical person and have no clue as to how i should hook them up. If any one knows what I need and how to do it, I would appreciate it a lot.
Scroll down on this site. In your case your looking at 30+ AMPS. So you will need a big relay. I think I'd wire them in inside and outside pairs using 2 25 amp relays and wire everthing including two cab switches (inside and outside pair having its own switch) back to battery. Use some heavy gauge wire and don't tap off any underdash wiring.
Instead of having to drill a hole in your dash for a switch for your lights you could tap into your high beams with a relay so when ever your highbeams are on your 4, 100 watt lights would come on. Thats how I wired my fog lights in but instead of using the high beams I used the parking lights.