Hello, I just got my bike back together after a top end rebuild. I took it for a few short break in rides. all was well. after the last one I changed the oil and filter. When I turned the key in the ignition switch, the lights went out for a second or so, then came back on. The bike fired right up, and I checked for leaks and shut her down. a short time later I went to start her up again and as I turned the key the lights went out and never came back on. I swear I heard a little pop, but I'm almost deaf. Now she is completely dead. I thought for sure I blew the main fuse, but it's fine. I am suspecting the ignition switch. How do I go about testing it? Or is there something else I should be looking at?