Or you could do it the right way and put them in the oven for about 10 mins at 200 or so. (Note: make have to leave them in there longer or up the temp..generally this is what I do). Use a old flathead and crack them open. Use the same flathead and scrap out as much of the old silicon as you can then you butyl also known as window weld and put a bead of that around the headlight. Without the lense use either a heathen or stove to soften it up then slap the lense back on and use plastic clamps to squeeze them together and leave them over nite. Wipe off any excess butyl or silicon you get on the lenses before it dries.
