Common Electrical Issues Front Brake Switch We get hundreds of questions about electrical issues on Harley Davidsons. Some of the issues are common component failures like a bad ignition coil or a bad crank position sensor. Other issues are more commonly caused by incorrect installation of aftermarket components like handlebars or lighting. The most common
Having problems with a 1992 FLTHCU. The signal lights are intermittent and brake light is not lighting up. Any suggestions? I have changed all the bulbs. Via Email Get out your test light. You will need to chase some wiring. The signals & brake lights would be 2 separate issues on your make & model.