Battery charged no power when key on

[skyrider]

Scooter and RKS have been very helpful before with my Piaggio Typhoon 50, so hopefully they or someone will have a simple answer. (RKS: my acceleration noise awhile back was from bad rollers. Resolved.)
Was having bogging again in hot, humidity so today finally cleaned the carb. After cleaning the carb, it started and ran very smoothly then I let it run and noticed that the fuel gauge wasn't working. Then cut it off and later tried to start but no power at all when key is on. No lights, nothing! Battery tests at 12.8V, main fuse was good, but replaced anyway. Checked for any wires loose and none. Any thoughts?? Here's a pic of the engine. Much thanks ahead!!