Depends on the manufacturer. Usually - GREEN = Ground BLACK or RED = Hi beam WHITE = Lo beam Sometimes the Lo beam can be YELLOW. But without knowing the manufacturer; it's hard to say.
Looking at the back of the bulb... Left terminal - ground Top terminal - low beam hot Right terminal - high beam hot Rich
That explains why my high beam indicator light burns on high & low beam, I wired mine wrong, good information to know. Vergil