PIAA 2100 Series - Manual (Page 7)

LAMP SERVICE
Bulb Retainer
Push down and out to release.
Slide insulator over connector.
When service is complete reverse steps to assemble lamp.
Make sure to not pinch wire while assembling.
The PIAA 2100X lamps have replaceable H3 style bulbs.
Use only 12V-H3-55 Watt bulbs.
Remove the two screws that are inset in the back of the lamp housing.
lamp housing
lamp screws (2)
6.