i bought this JVC hed unit and a wiring harness. Well, the part of the harness for the battery, the accessory, and the ground did not connect properly. So I'm just gunna hardwire it. But, I need to know about 4 wires that went into the wiring harness. There's a light green/yellow wire, a yellow/black, light blue/red, and a orange/black wire. If anyone knows what wires on my head unit will match those on my '89 escort lemme know please.