Thus far I have not been able to find a wiring diagram for a 2005 C50. However I can find a wiring diagram for a 2004 Volusia. Does anyone know if Suzuki changed the wire colors/stripes and layout from 2004 to 2005? (With the exception of the electronics/wiring related to the EFI system)
http://daltonmountain.com/vl800manual/
The web site above has a wiring diagram for a 2001 Volusia -- and I am told that the wiring for the 2001 and 2004 are the same -- but in truth, I am suspicious and have not cut any wires on my C 50 based on this diagram