OK, the KE70 has pathetic headlights, even at 60kph!   So the first thing I tried was replacing ONE bulb with a 100/90watt halogen. This was a pain as the three 'wings' were not quite in the same place so I had to cut one off and re-rivet it back on a few mm around the edge. Then I found the difference in brightness to be very small!   A bit of research found that the power goes straight to the bulbs, then earths back up the steering column and through the switch. Never a good idea, my old