1977 Ford F-150 Wire Harness Install - Wire Transfer wwwwheeler›How To1977 Ford F-150 Wire Harness Install - Wire Transfer Summit also includes a full key of the colors and designations is the instructions. and twisted-together wires may have started as 1977 FORD F-150 Wiring Harnesses - Summit Racing Equipment 1977 FORD F-150 Wiring Harnesses. You Have Selected. Display Options. Guided Navigation Display Options. Select the navigation view you prefer when narrowing your search. Vertical Navigation Horizontal Navigation. Part Type / Wiring Harnesses. Remove. Vehicle / FORD. 1977. F-150. Remove All Selections. Narrow Your Results. Engine Type.