‘40 turn signals

[sid carey]

I recently installed a turn signal switch made by United Pacific on my 40 Ford convertible. It works the turn signal lights on all four corners of the car quite well. However, the indicator on the switch, which is green light located at the end of the lever, is very dimly lit. The car still has a 6 V system, positive ground. I replaced the bulb at the end of the lever, because it was a 12 V bulb. It now has a 6 V bulb in it. Any suggestions? Thanks, Sid Carey