Rather mundane question, but having difficulty buying the 194 and the 1178A bulbs for the front and rear marker lights on a 1969. The 194's are used in multiple places on the instrument panel as well. It appears, that most have gone to the "plug in type" as used in modern vehicles. Any sources for the old style appreciated, or, is there a plug in adapter that will let one use the new style bulbs. Thanks Ron