People make it more difficult than it is. I went to advance auto and bought these $13 cruisin lites from street glow, they come pre-wired. You take out your headlight, pull off the backing piece, and between the parking light and lowbeam there is a little hole where you can fit a light. Wire the mini light to your parking light and make something to hold the mini light in place. I did it the easy way, i wrapped electrical tape around the end to make it wider, then just stuck it in. It's been there for about a month. Doesn't show up perfect with v-tech covers though. Still looks cool at the right angles. Whole thing took about 10 minutes tops. Any other questions, just ask.
Peace.