This turn signal and headlight dimmer switch is located on the left side of the steering column. It controls the low / high beam function as well as the left / right turn signal function. These fail commonly as our classics age and should be replaced as soon as issues arise. Be sure to check the right-side washer switch as well, now is the time to replace to save on labor costs, part # 91161330602 high-quality OEM replacement, designed to perform like the original. We source this part in Germany to ensure quality, reliability and precise fitment. Sold individually. 1 necessary per car. Please note: technically this can fit the 1974-1975 911 models, but if you want the original look, please order part # 91161330...(choose a part on the right to read more)