How hard is it to wire in a stock set of passing lights on to a 05 RK custom, would i have to get a larger alt? thanks

 

I've installed them on my Fatboy but never on a Road King. Can't imagine it's much different. Just spliced into the headlight wire (yellow I think) inside the housing. You have plenty of juice to run 'em.

 

Alright, thanks for the infromation.