I ride my bike to work year round and I found the need to be able to charge my phone when I ride, especially when I’m using it for turn by turn direction.
Wiring your bike for use with a cigarette adapter is simple but I looked around to see if there were some instructions or a kit I could buy but I didn’t find much in the way of step by step instructions, and the only kit I could find was for a bout $50-$60, money I did not have to spend on this project.
I did find some chatter on a forum about two ways of wiring (this may seem obvious). One going directly from the battery so it is on all of the time or two connecting to the switch so it can be turned off. Since there are LED lights on cigarette lighter socket and car charger, I opted to go for the switched option.
My bike is a 04 Yamaha R6 (This model still has enough room under the rear seat to do this).
Phone needing charged on the road iPhone 3G