Regulator 12 Volt, Dual Polarity, Two-Unit Type, A-Circuit, 4-Terminal For : Delco Generators Used On: Agricultural Applications Replaces: Delco 1118981, 1118988, 1119577, D655 United Technologies 0218821VROOGR Notes : Terminal ID: L-BAT-F-GEN (underneath base), GRD (base). Similar to 81-1906 except 81-1906 has GEN terminal located in back of base. Transpo