I am installing my stock stereo into my RV and a buddy gave me his harness from his wrecked F150. It'll plug into my stereo but I need to know which wires go where.

In the square plug I have 8 wires:

Green/red
Orange/black
Green/black
Light Blue/pink
Grey/black
Black
Tan
Grey

In the second plug I have 15 wires:

Black/violet
Red/black
Green/black
blue/black
black/green
black
grey/black
tan/yellow
brown/pink
orange/red
white/green
green/orange
orange/green
blue/white
and a little larger guage black/green

Please post a wiring diagram or such.

I appreciate all of the help.

*edit* There are two plugs that go into the head unit. After some digging I have found that the second plug (with the most wires) is the harness that includes the power, ground, accessory 12v, antennae and speakers. What is the second plug for (the first one I listed originally)