00' expedition fac. amp wire colors

I'm doing a 2000 expedition that is an insurance theft job, they cut the factory low-level amp cable behind the radio and im trying to find the wire color schematic so i can interface a metra metra 71-5700 with it and then plug that into the metra low level harness. ford wants like $400 for the harness and the insurance company doesnt want to pay for that. I havent tried calling ford yet to see if i can get this info, so im posting here first.

Try this: http://www.installdr.com/Harnesses/Ford-Wiring.pdf.My ex once told me I have a perfect face for radio.

i got the wiring diagram from ford, however they dont show any amp for the premium system in the diagram, the only thing they show is a "rear intergrated control panel" which interfaces with the rear door speakers, but according to this diagram all four speakers are shown hooked up directly to the radio without any amp? how can this be? GEEPHERDER    that pdf that you linked up shows the plug im looking for the info on, however they dont list the wiring colors. its the thick gray cable with 8 pins in a small square plug. when they stole the radio they cut the square plug end off.