It's a small plug with yellow and gray wires. Let me know if you need any pics. I have a complete spare dash and harness, and I've had the dash bezel out of my two, to many times.
When you connect the speaker wire to the plug, i see the following:
Rear Speaker 12 Volt (Power) Light Front Speaker Ground
Does the 2nd wire from each speaker go to the ground, or do you connect them together when going to the plug. I dont want to short something out. thanks!