Wiring Diagrams - Courtesy of http://www.Shovelhead.us

Electrical Wiring Diagrams
1965-66 Sportster H  1973-1978 FL 
1965-67 Electra Glide  1973-74 FX 
1965 Sportster CH  1973-74 FL FLH 
1966 Sportster CH 1973-74 XL XLCH 
1967-69 Sportster CH 1973 FX 
1967 Sportster H  1974 FX FXE 
1968-69 Electra Glide  1975-early 78 FX 
1968-69 Sportster H  1975 FL FLH 
1970-71 XLH, XLCH 1972-later XLH  1975 FX FXE 
1970-72 FL  1976 FL FLH 
1970-72 FX  1976 FX FXE 
1970 Electra Glide  1978-83 FL 
1971-72 Super Glide  1978 Late-79 FX 
1971 Electra Glide  1980-83 FLHT 
1972-on XLCH XLH  1980-83 FX, except FXR 
1972 Electra Glide  1980-83 FXR