Motorcycle Charging Systems


Most motorcycles use a charging system that is quite different from those used in automobiles. Due to a premium placed on size and weight by owners and manufacturers, some compromises must be made. Most are built with very little reserve capacity and suffer early failure when subjected to much more than the stock electrical load of the bike as it left the factory. A few farkels and they can melt down rather quickly.

flow chart charging 101
Charging Systems 101
Diode testing procedure
Diode Testing Procedure
950/990 Charging System Specs

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This site would not be possible without the yeoman's work of fellow Katoom riders, dealers, mechanics, and engineers. Thank you to all who have contributed. I will update this list periodically. If you have some other "Wisdom" that you would like to be added to the HOW, please e-mail them to me at:
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DISCLAIMER: All observations made in these pages are based solely on the anecdotal experiences of their authors. The contributions are reprinted here exactly as posted by the contributors. The spelling, syntax, grammar, etc have purposely not been corrected in order to retain its original flavor. The contributors are from throughout the World, and English may very well not be their native language. Don't be an ass and complain about the lexicon. YMMV, of course. You are "on your own", and I take no responsibility if someone tries anything in this website and gets into trouble with the law, their dealer, significant other, or the manufacturer. Or damages their person or property, or goes deaf, dumb, or blind. If you are not competent and comfortable with the inner workings of internal combustion engines, do the wise thing and defer to an experienced mechanic. Take everything you read or hear "anywhere" butt especially on the Web with a large dose of salt.