I bought this sub from Homier truck sale. I have read past posts where the 9 pin connector is used. I know it was a speaker set but I got the front panel off. It has a processor? behind it. The wires arelabeled on the chip. Most of the wires are for the led lights, but there are three that look important. A black wire that is connected to symbols DGWD The first symbol could be a B but looks like a D with a line in the center. The black wire is the biggest. The second is a white wire has the same letters But with an N, D-G-N-D. The third is a grey wire with D+4V..... Any suggestions?