I have the Harmon kardan sound system upgrade in my MINI. At first radio didnt work so i spliced in a power hard wire. Yay, now radio turns on but no sound...i swapped to a new amp to see if that would fix it, still no sound. before i tear apart this car to check the electricals, does anyone have any ideas that may help me? Thank you. Also i checked the fuse boxes for blown fuses and all. Old bcm used to have corrosion in it so i decided to replace it with a used one matching mine. That fixed a couple things but im not sure what to do next to get this radio to work.