Ditch the Haynes. (Slartibartfast just posted the link as I was starting this). At the very end of the EL section he mentioned, there's a Harness Layout section. The section shows a location, plus a breakdown of the shape and wire counts of the harnesses. You may have to work backwards a little from there to find your leads. Once you know what harness you're working with, you can go to the appropriate EL section to get more details about the wiring, including wire colors.
You should also look at the General Information (GI) PDF. There's a "How to Read Wiring Diagrams" section that does just that, including identifying harness types and the table for deciphering color codes.