I recently tore into my Power Box 360 D Bosch job site radio for a no sound issue. I found that the amp board was fried. I have not been able to find replacement parts for my Bosch job site radio. I want to add a new amp board to my stereo possibly one with blue tooth function if possible. I am having difficulty identifying what the connectors are for. I have figured out that one is for left right center and ground for sound but the others I am unsure. If someone could help me identify the components of the board so that I can purchase one that will work with my Bosch stereo I would greatly appreciate it. Here are some pictures of the Amp Board.