"Plastic Welder" Re: High Beam Indicator
Black Siamese syringe 2 part epoxy yellow has some body. Used to fix one of these plastic studs behind dash of 71 Malibu. (And various other broken plastic bits) First butt glue the broken stud on. Then a band or blob of the epoxy around the outside for reinforcement.
Packaging says Devcon. Syringe says ITW Performance Polymers part #47809/22045.
(I've used also on chevelle grill, Toyota corner light assembly broken plastic stud, etc.)
Suggest test first to see how it holds parts (has a little more body than amber epoxy resin), how quick it sets, etc. Like most all epoxies, cure time is very temperature sensitive.
(My blue hi-beam indicator lamp used to need a light finger tap on the dash to wake up.)