Here's some slightly more serious advice, thought the others are on the right general path..
1st: use the electrical tape on household problems, like muzzling a yapping dog. For vehicle wires, use shrink tubing on each wire. Not the cheap Chino stuff from Radio Shack, go to Napa or AutoZone or similar because it's heavier and more resistant to getting soft from engine heat.
2nd: measure the voltage and current drop across the individual high and low beam connectors at the headlight connector. If you don't have the proper instruments and know how..STOP..and find someone that does. Do the checks at idle and at steady rpms up to at least 4,000, not just blipping the throttle. You need good continuous readings.
3rd: check the resistance against the factory values for the stator. Do this before you re-solder the wiring since they are already cut. In any case, do the measurements with the stator disconnected from the rest of the harness.
4th Make sure the r/r rlu regulator is WELL grounded. Check the mounts and bolts, make sure rust/corrosion isn't hiding. Check your connectors for any breaks or gaarbaage that may have found it's way inside.
5th Make sure you're not using those cheap Chino/Taiwan bulbs. The ratings are pretty bogus and the resistance is usually way off. This cause voltage/amperage/load problems the reg can't handle.