I'm the guy who started the thread. I searched the web for the orginial bulb #1105s. I found a site for Buicks that gave the converion number and it's use. Went to NAPA, they didn't have the bulb with the "S" on the end. They looked up the Buick and said their books has a dual element bulb as a replacement. The counter guy even said it was wrong. Anyway, I found the bulb and the rest is history.
