After 20 years finally lost the p/u's sealed beam. Replaced with a halogen sealed beam. Noticed the silver reflective material isn't applied where the leads come in the back. About 2" non-reflective opening in the back, light leaks where hood line meets fender.
Spray paint didn't stick to the glass, course it was only about 40 degrees outside, but had a warm engine compartment.
Is run of the mill duct tape heat resistant enough to apply to the headlight, or other ideas to solve this minor, annoyance. Thanks Mark