I got tired of looking for a good diagram for the Yamaha xs650 that wasn't completely wrong….so i made one. Simple, easy to read and to the point. Hope it came out as clear as it looks to me. A couple of key notes: The brush assembly of the stator must be ungrounded. This means taking the 3 screws attaching the brushes to the outside of the stator and replacing with 4MMx.1 nylon screws.. This image shows the corrected color coding and connection for the flasher wiring on 1977 and up 650's which is wrong in the manuals. 1974-75 Starter, Alternator, & Ignition Circuitry This image shows the starter circuitry for a 1975 XS650 but is typical of other early 650's hopefully drawn in a manner that is easier to read and understand.
Here is a set of Standard Wiring Diagrams mostly colored. Some of these may have faults so be aware. Jayel, Has supplied and converted these to a PNG image for us and the clarity is excellent Go down to Jayel's post for diagrams of cable routing. Yamaha XS650 Shop Manual Click here to find the Yamaha Xs650 model ID table