My headlight, passing lamps and dash light stopped working on a 2000 Road King Classic. I have changed fuses, checked connectors along the harness, check connection on ingnition switch. All seems to be as it should be. I'm not sure if I have a ground problem or something bigger. Any thoughts on how to troubleshoot the problem??

 

Grounding is often an issue for lights. The forks can't ground properly through the bearings in the trees. You should have a ground wire from the tree to the frame neck; sometimes this connector gets loose and pops off.