Hello All! had a mouse living in my electrical panel and has wiped the main harness

....problem is i can't seem to find any color code to any of the wiring and a lot of hit has 26 years of grime to make it completely un-identifiable ....If anyone has a Schematic for the main board and corresponding wiring i would REALLY appreciate it...Can't afford "Da-Book" now as we are preparing to move to the next job...
Thanks All
Eric