On my way home my bike just quit. No power, just like there was no battery. Got a trailer and towed it home and presto it started. Shut it off and started it again and it killed and again, nothing. No power. Battery tests good. Power to the starter. No power at the ignition switch

I would start with Battery Connections, Connection Of Hot to Starter and Ground to Frame/Engine. $5 test light should be enough.