No, you need to diagnose this issue and putting (2) 100 watt bulbs on it will not fix it. You'll fry the harness by doing that. You need to go to walmart or radioshack and get yourself a digital multi meter that measures dc, ac, ohms, and amps. Then come back here and I will tell you how to check the bikes stator and wiring circuit as well as the regulator.
Soldered what wire to the yellow stator wire?