tail light mounting holes?

[LOUD MOUSE]

More often than not the mounting bolts will supply the grounding contact. ..........lm

Your bracket needs to be electrically grounded through the fender for the lights to work. This needs to be a good metal to metal connection or you need to run a ground wire.

Gunner

[cknight]

Especially if you have a base/clear, or powdercoat, type finish, it's a good idea to remove the finish from the ID of the bolt holes in both the fender and bracket to help insure a good ground. Even if you have a "normal" paint job, it's still a good idea. Exposing bare metal that will be covered by the bolt heads, washers, and nuts can't hurt. Using dialetric grease in these areas will help resist future corrosion, as the grounds need to be considered like any other electric connection. Also, make sure the fender is grounded to the frame, etc. This applies throughout the entire bike. Use an ohmmeter everywhere to insure ground continuity. We've all seen folks spend lots of time tracing "electrical probems" that are a result of a poor ground. Even running an additional ground wire from the headlight area (usually the headlight rim tab) to the chassis (one of the air filter bracket bolts is usually convenient, and hidden), instead of depending on the steering head bearings, will help insure good current flow. Regards, Chase

[maia]

thanks for great advice especially about the fenders grounding to the frame.