// General electrics

The Honda C90 Cub has a 12 volt electrical system.
Using a CDI ignition system, doing away with the older contact breaker (points)

Lights are run directly from the generator & therefore can be quite dim on engine tickover.
The battery runs the rear brake light, indicators & horn.
If any of these are not working, it is usually down to a bad battery.

Courtesy of www.fuzzibitz.8m.com & members of www.cubc90.co.uk