flintriver,

Jim Carter, Chevy Duty, and American Classic Truck Parts (this forum's sponsor) should have the bulbs.

http://oldchevytrucks.biz/p/1947_1955/fullpage.php?page=068&session=1078332
http://www.americanclassic.com/asp/...;iyear=1950&ytype=to&exyear=1952

Covering the ignition connections is not required but it is not a bad idea. I bet almost everyone who has worked under the dash with the battery connected has gotten a spark from touching a loose wire to one of the hot leads on the rear of the ignition.

Tim