The problem is almost always a bad ground. LED's stock? That's heresy
I put in LEDS, after the left one burnt out a few thousand miles later one of the guys at work comes up to me. "Hey man, looks like your left light is burnt out." "Cool, thanks." "What are those light for anyway?""Oh, them, they burn out." "No I asked what they are for...""Ya, they are there to burn out..""Oh."The left light is still out and the right still lit. On my 95 the left screw was so corroded in it sheared off when I tried to remove it. Now its missing an eyeball.