Hii Froog. Thanks for telling me about the Puzu audio site. It really looks as if my Hansshow red DSP box is looking a lot like their product. However I can't not inverse the plugs in the right side, between the back seat and the side of the car. I'll have another look tomorrow. I tried to use their windows DSP control program but it doesn't work with mine Hansshow box.On the rear right side of the car, between the back seat and the side of the car, you plugged two white connectors activating the two rear shelf speakers. They are same for the both of speakers, right and left. Have you tried to inverse the plugs ?? Look at the attached file and examine your DSP if it is the same.