Shorted Switch

Aftermarket ignition switch can be problem on older bikes. This CB750 for example, the wiring was not too long, so turning the bar to far right was pulling the connection; resulting cutting all the power. While it has been fixed, then inside of switch was shorting out. Soldering iron is a necessary tool for older bikes.

Shorted switch looking sad.

soldered and fixed. You have to put it back without screwing it up- which happens often if you are not careful.