I'm finally upgrading to Euro headlights. What bulbs can I safely run with the factory wiring? I think they originally came with 55/100s but can I upgrade to 80/100s? How about those Silverstars or Nighthawks that I often hear about? Also, what bulbs are needed for the fog lamps? Do the Euro lamps keep the yellow bulbs or are they white?

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1989 300CE