I would test the plastic you are using to ensure the lamp (bulb) does not melt it. I used colored glass to ensure it does not melt or get brittle from the heat and break in the future. My gauge face decal did not have the high beam hole, so I just installed the decal and then used an awl to punch the hole. While the awl was in the hole, I continuously rotated the awl until it cut through the decal and left a nice clean perfectly aligned hole.
