yeah put them in cold oven, set it on 200 degrees, and let it slowly heat. electric ovens are best, although i havnt tried i think gas ovens would heat far too fast. after a few minutes try remove the glass from plastic holder, keep doing this untill it comes off. then take the silver part from inside the headlight and just do the face bits of it. not the dish, mask that up. youl no what i mean. then i put it back together and stuck it in oven for the glue to turn sticky again, bring it back out, squeeze it together as hard as you can and let it set. simple. (note, make sure it lies on the glass in the oven, any plastic will bend or melt if its against any of the surfaces, happened to me first time)
ah looks sweet mate, glad i could help.
as some of yous no my wheels got stolen off my car a while back. heard nothing about them since......untill now. there on a old vauxhall, on my estate, the street behind mine. cheeky #######s. plan to have them back within the next few days