TRC off... maybe u pressed a button or something something that switched your traction control off. If so, just press it again when ur done drifting like one guy said...
If VSC always on... dunno, maybe u screwed the Vehicle Stability Control and it needs checking...
I intend to use my stock head unit phone+ phone- and tel mute using ear piece wire, since ear piece using 1 ear plug I could wire that to phone +-. My only problem is for the tel mute what wire from the ear piece...