Wiring Diagrams 1970 XS1 page 1 ...1985 Yamaha Maxim Xj700 Wiring Diagram - ELECTRICAL SYSTEM OVERVIEW: Electrical problems can be terribly difficult to diagnose properly. And to add to your level of frustration, both electrical and fuel-related problems can manifest themselves in the same ways: hard starting, mis-firing, poor performance, back-firing, etc.. * Whistling or chirping noises are some of the hardest to identify as to their source. Here's a couple of tricks: Quick verification: take the plugs out.. Yamaha Motorcycle OEM Parts & Online Schematics HERE. Yamaha Motorcycle Parts & Accessories HERE. Yamaha AL125 Mio 125 GT Illustrated Parts List Diagram Manual HERE.