Originally Posted by Pilotgeek
Hmm. what did I do to my motor bike. I built a tail light using high-intensity LEDs to work off the white wire (Protip: Do not buy from Radio Shack. Too expensive. Over $2 per LED? No thank you). It has 6 LEDs, 3 are on all the time, and the other 3 come on when I put on the brakes.
Depending on how much power it draws from the white wire, you might want to put a switch on the light. If the light is taking too much power it might be easier to cold start if ALL the electrical power is at your disposal. I know LED's draw a LOT less then regular bulbs, but it will draw some. It's just a thought.
No one I know has ever had any luck using the infernal white wire. Let us know how it goes.