Removing Headlight & Streetlamp VFX & Car Sounds

I'm trying to help someone finish a world free of modern stuff for history players (found here). They've solved majority of it but the main issue are streetlamp lights, and the car headlights and sounds. Messing with the object files of the cars and lamps doesn't change anything as there are no VFX in the usual or unusual spots, and I can't find the alarm that controls the lights turning on at night in the Python files.

Could we get some insight as to where we can look, and how we might these off?