I have CAV GT40 #170 with “correct Italian tail lights”. The rear turn indicator bulb has burned out. I cannot find a bulb that works. The information on the end of the bulb is “Phillips 12V-5/20 FIAT 6V.” I would also like to get spares for the brake light bulb also. The information on that bulb is “FIAT 6T OSHRAM 7532 12 V 20W.” I have tried auto stores and the internet, but no luck. I have the original tail lights that were from CAV, but those bulbs don’t work. Any ideas? Any help would be appreciated.