Bonneville America Forums Forums Technical Forums General Tech Electrical System Diagnostics

Battery failed on my 2005 America. Was the original battery when bike was purchased new in march 2006. Has 6600 miles on the bike. I bought a new interstate battery yesterday. I want to check the electrical system to make sure all is well. Couldn't find any output specs in the factory service manual nor in the owners manual. Can you help?

Gerry
gmcosker@hunter.com
Hunter Engineering Company
Bridgeton, MO

I found some general specs in Haynes...the alternator output is around 67volts AC, measured at the 3 wire plug coming from the alternator cover. There should be about 12.8 volts dc at the+ battery terminal at idle, which should go to about 14.2 at around 4000 rpm's. If its close to those readings, its ok. I'm going from memory here, but I should be close.
G

Page 1.16.....engine running at around 2000 rpm battery voltage should be 14.5 volts +/- 0.5 volts......that checks the charging system