I have installed the power outlet on a HD Fat Boy. The cable is made up clean, the length is just right (in my case are still 20cm reserve available), eyelets for battery connection already exist. The security slot is located at, you can do it yourself at that position where it fits best - because the manufacturer has thought!
The only small gripe: It would be good if more cable ties would be accompanied in different lengths or at least the two supplied had stayed longer. I found personally now but not really bad, the trained bike hobbyists has something anyway because ;-)