Adambourassa, I used Phillips 100/80 watt 9004 headlamp bulbs. Don't ask me where I got them for I can't recall, somewhere in New Mexico. As JimH remarked you must double to get any effect. Not just your wattage but the wires feeding those flamethrowers. I rewired using H/D Dbl contact relays and # 10 gauge wire. Now I have just brighter W124 headlights. Happy Trails Beep Beep from Houston.

Donald
Here it's shining in your eye