SinghG5,
I stripped the green/white/red Lucas wires and smashed some of those flat electrical adapters on the ends, which I just inserted into the old female parts (with the translucent green covers) of the original wiring harness. A little trial and error figured out which was which.
I just got back from a real long ride too, and nothing shorted or cut out or anything. When I'd stop behind cars at lights, I kept making sure the headlight was still on in the reflection of the car. Very happy - looks much cooler now, in my opinion!
Oh, and you might also be interested to know that I replaced both of those little pilot lights, since one had burned out.