I just acquired a 1973 450 SL that was in the process of restoration. The guy I got if from did not remember how the foot-activated switch for the windshield washer mounted. The switch works fine, activating the washer pump and wipers, but it is mounted on a long plastic "cover" that looks like it would either mount along the threshhold below the hood lever or perhaps up under the emergency brake brackets. I've gone to our local dealer, but can't pull up anything but the switch itself.

Does anyone have a 73 SL that could tell me how and where this mounts?