The little cover over the bulb and that other sensor thing twist 1/4 turn and fall out the bottom. I used a screwdriver to turn them because big hands. DO NOT drop that red lens cover. I taped mine to the windshield with string, but it didn't even come off the sensor thing without a little pull.

Link to dash instructions with pics - http://www.atthetipwebs.com/technolo...ctions/hud.htm