F540SLD FORD REGULATOR, EXTERNAL, HIIGH AMP (Ref. no. 19-52124, 1952124).
Regulator, External, Fender Mounted.
12 Volt, B-Circuit, 14.2 Vset., Neg. Grd.
For: Ford 1G Series ER/EF Alternators
Used On: (1973-92) Ford, Lincoln, Mercury
Note: Terminal ID: I Light, A B+, S Stator, F Field, Case B-.
Heavy duty version of F540. F540SLD is designed for High Amp (70+ amp) applications, but can also be used in low amp ( -70 amp) applications.