

That's exactly where I found mine!Funny enough, I found the exact same plug sitting on top of my driver's side motor mount...or kinda near the bottom of the strut tower a few weekends ago!
Not 100% sure what it goes to. I haven't done anything to that side of the car beyond the Steeda Stainless clutch line, Steeda upgraded reservoir to clutch master line, and replaced my clutch master cylinder (which was when I found it).All 3 of those mods don't involve an orange plug like that. Must just be something leftover from the factory, as mentioned above!