Yamaha Motorcycle Wiring Diagrams Yamaha XS1100 XS 1100 Electrical Wiring Diagram Schematics 1978 to 1981 HERE. Yamaha XT500 XT 500 Electrical Wiring Diagram Schematics 1976 to 1981 HERE. Yamaha XV250 Virago XV 250 Electrical Wiring Diagram Schematic 1988 to 1994 HERE. SOLVED: 1978 Yamaha XS1100 fuel line routing - Fixya Feb 01, 20111978 yamaha XS1100 fuel line routing Google Search. google. Posted on May 25, 2017. Helpful 0 ; I have a 1980 xs1100 I need some type of diagram showing where all the fuel lines hook up to the carb, or a picture of the carb showing how to take it off, the bike only runs when the choke is on, the Faulty fuel pump or fuse or relay. 16 XS1100 / XS850 / XS750 Electrical Parts And don’t let a weak battery leave you and your classic Yamaha stuck miles from home. Mikes XS has XS750 lithium ion batteries and AGM batteries, as well as XS750 spark plugs, tail light assemblies, turn signals and fuse boxes to suit your vintage Yamaha restoration needs.