Help with a 2003 Peterbilt 330

I need help finding all the wiring schematics for a 2003 Peterbilt 330 day cab with a CAT 3126 engine, a customer tried to replace a messed up fuse box and now I have no reference as to where each wire goes so a detailed and full schematic would be really helpful. Hopefully someone on here has one or knows where to get one, help please