The truck has 2 harnesses that come from a box under the dash. one of them looks like it was connected and the other looks like it was just cut off and not used.
Truck Harness wires
red, yellow, orange, white, black, brownish grey color
Other truck Harness thinner wires(not connected to anything)
yellow, white, white/black, green, black, lighter brownish color
Alpine harness
black, yellow, red, blue, blue/white, green, green/black, purple, purple/black, white, white/black, grey, grey/black
If anyone can tell me what connects to what let me know. I don't want to drive thru the winter in silence. Thanks