[tm1100s]

With everything OFF you would like to see 12.6volts or better. 12.4 should crank the engine, less is questionable. BUT, with the voltmeter connected to the battery, turn the key ON and see if you get a drop, then push the starter to see if you get more drop (and what are those numbers). After you have those numbers I'll try and walk you through a couple of tests to narrow down the lack of power.

Make sure the kickstand and clutch switches are working, too. You don't happen to have a GS-911 scanner, do you?