Andrew,
I've used Cyclops in other bikes and they are first-rate. NO issues and GOOD people to deal with. And their products are better than anything on ebay or amazone.
MZNYC,
"....don't want LEDs...."???!!! WHAT, are you still using a carbide lantern?? Are you still riding horses?? Do you not use paved roads?? Lower power consumption, much less heat, more light, choose your color, plug&play, better vibration tolerance, much better on-off tolerance, less $, *****?? Just how old are you??
Once I tried LED headlights I converted every bulb in every vehicle I have (2 cages, 6 bikes) to ALL LEDs , except for the "GEN" dash indicator in my '00 K1200RS that has to be an incandescent for the (activated field) alternator to charge. Ancient tech, those BMW's.
I digress. Anyway, this is the adapter that Cyclops - THANKS Andrew- has for the ST ($2):