u/BanproofSpoof

Have fitted an aftermarket head unit using just the blue connector but when removing original there’s an additional white plug attached, and more than anything I’m just curious what it is?

Everything works fine including steering wheel controls, so it doesn’t seem needed for anything, but I really just want to know what it is for?

Can anybody satisfying my curiosity?

Edit: not my pic but same cable, mine is 2008 1.5 GLX by the way