1977 Ford F150 XLT wiring Diagram
 

Wondering if anyone had a wiring diagram for a 77' Ford F150 XLT? It would be much appreciated.

1973-1979 Ford Truck Wiring Diagrams & Schematics - FORDification.net

They don't have a '77 in there, but depending on what you're tracing, a '76 should be pretty close.

Pick you up a Chilton's Manual, Part No. 8576. It's got wiring and vacuum diagrams, and tons of information. It covers Ford Pick-ups from 1976-86, but much of the info is applicable back to '73.