I have a 2006 Street Glide with an electrical issue I am needing some help with. I think it is a voltage regulator issue but not 100% sure. I was riding yesterday and the volt gauge was reading between 13-15 all day. Later that night I noticed the headlight dim, the radio shut off and the volt gauge dropped to ~10, as soon as it hit 10 it would come back up to 13-15. It did it several times all evening. The battery is less than a year old. I would appreciate any help I can get.

 

Go to the DIY section of HDF and you'll find the Electrical section which includes two diagnostic procedures for identifying your problem:

https://www.hdforums.com/forum/elect...d-lighting-43/

Carl