I bought a Sony sub woofer from a truck load sale. It has the nine pin connector on it also has the zips coming out the back. I took off the front panel and the nine pin wires are run to a circuit board which are labeled. Most of them are led lights for the display, but I have a black wire, the biggest of all nine connected to the symbols 8GMD and then there is a white wire labeled DGN8 and then the third is grey labeled D+4V. Can anyone help understand what the symbols mean?
