AWD, you are going to need to pull out the headlight switch and you will need to cut 3 wires. You will be cutting the tan/white striped wire, dark blue/orange striped wire, and the dark blue/white striped wire. You will need 3 separate relays unless you can find a relay capable of 15 amps per switch. From there (assuming a separate relay for each wire), you will wire the cut wire to terminals 30 and 87 of the relay. Then you will need to find a switchable power source (black/pink wire on the back of the radio is an easy one to get at and has some extra room on it) and wire that to terminal 85 and then wire terminal 86 to chassis ground.
This is going to cause all of your lights to come on as if you had flipped the headlight switch to the ON position. If you are wanting only the headlights to come on, then that is a slightly different story and I would need to tell you how to do that.
