I used the letter markings from the beginning. I actually had the same results with 3 flasher cans of identical pin placement. The flashers, R+L, Emergency all work flawlessly, just the little lamp on the indicator light does not light.

~ Cosmo
1949 Chevy Half Ton
Rocinante, like Don Quixote, he is awkward, past his prime, and engaged in a task beyond his capacities.
"...my good horse Rocinante, mine eternal and inseparable companion in all my journeys and courses." ...Don Quixote, Cervantes
"If you come to a fork in the road, take it."...Yogi Berra
"Rudeness is the weak man's imitation of strength." ...Eric Hoffer