[Bob Bidonde]

Original standard equipment headlight bulbs were dual filament & both filaments produced 21CP. An optional 21-32CP bulb was available for brighter lights. When the upper filament was illuminated, the light beam is deflected downward. When the lower filament is illuminated, the light beam is straight ahead. Look carefully at the factory light diagrams & you can see some dots representing the bulb filaments. In the case of the 21-32CP bulb, the 32CP filament is the straight ahead beam, so it is the bottom filament.