Hi all I am have a odd issue in my brothers older car, I just had a new car radio installed in his car for Christmas. His old radio didn't work period no power or anything. When the new radio was installed it got power and would turn on, however now at this point there's no audio at all through Bluetooth, radio aux no sound to speakers. Thinking okay it maybe wiring to the speakers we were about to run new wires to them, however upon inspecting the old wires to the speakers there was no damage along the lines anywhere.... Now thinking ok not sure called car pros, they said to look at speaker fuses.... However doing a lot of digging into the matter I'm not finding any any at all signs of a speaker fuse. And it's not the fuses to the radio as the radio has power
What do I do at this point
What do I do at this point