Motorcycle Repair: 72 Honda SL350 electric problem when hot, honda sl350, fuse block

Question
I just bought this bike last fall and can't figure out this problem that it has had since I bought it.  I have it running smoothly for about 5-10 minutes, and then it just shuts off.  All electrical power is gone - no headlight or anything.  If I wait about 20 minutes, the electrical is back and it runs again until it warms up.

Answer
Kevin, you are looking for a loose connection in either the main fuse block or the ignition switch.  When the bike is cold the circuit is closed but when current starts flowing the loose connection heats up because of the increased resistance and then opens up.  It has to be in the main circuit or you would have other circuits still work.

Regards
Rich