Friend of mine had an aftermarket screen with ac for the UL 2002 430. Tried to install it and had the harness all hooked up. Turned the car on and it smoked out the top plug of the aftermarket screen. Said screw this and went back to OEM. Now my radio controls don’t work, and the steering wheel volume doesn’t either, it plays music, the climate control works, I just have no use of the buttons on the radio or volume buttons on the wheel. I have to use the rear center console to change the volume or channel. Still plays sound and everything. What needs replacing?