Silent Radio and Dodge Indicators

[Bunggle]

Had the heater matrix of my FD changed a month or so ago, and since then, when I turn on the stereo, it comes on, the aerial goes up, but I get no sound. Also, When I indicate, both (left and right) arrows on the dash light up, but when I turn on the hazards, they don\'t go at all.
 
So obviously it\'s a wiring problem... Anyone got any ideas where?