The spotlights or passing lights on my 09 Ultra are glazed over on the inside. I took them apart, filled them with soapy water and rinsed. I stuffed paper towels into the lights to wipe the inside dry. One thing I learned is the bulb inside the Spotlights can be adjusted or bent up or down very easily helping in the alignment of the lights. Bending the lamp down moves the light beam up and bending the bulb up aims the beam down. This all started because I was cleaning the bugs off the fairing and bummped one of the spots. I tried to move it back into place but it was too loose and did not stay in place. I also had to modify a socket wrench to deal with a wire going through the spot light bolt.