Your regulator/rectifier burn out?

[JoshuaTree]

Yes. Normally you'll start with a fully charged battery (in your case, you'd use a trickle charger to 'fill up' the battery overnight) - your bike will be running off of the battery for the duration of the test.

You'll disconnect the stator leads at the point closest to the stator before starting. Normally, you'll start the bike and rev it up to the test RPM point - normally between 3000 and 4500 RPM for most bikes (its useful to have help - someone to twist the throttle and someone to take the readings with your multimeter). Test each and every pairing combination - For a 'three wire' system: wires 1&2, 2&3, and 1&3 (or however many pairing combinations to account for the wires coming out of the stator). The voltage should be the same for each of the pairing combinations. Be aware that the plug coming out of the cover may have 'other wires' that are for other sensors/purposes. You'll only need to test the (normally thick) wires for the stator.