Overview 14V / 28V, replaces Ford, Electrodelta, Prestolite, Interav, Wico, FVR, and more voltage regulators. (Refer to Model Eligibility for your more information and additional models)The Plane Power R1224 Voltage Regulator is a solid-state voltage regulator with over-voltage protection, field short (over current) protection, and reverse battery protection. The Plane Power R1224 Voltage Regulator also supports precision load sharing for twin applications, and an alternator inoperative lamp.NOTE: The R1224 voltage regulator is designed to be setup in the field for 14 or 28 volt operation by configuring the two jumpers within the voltage regulator. Attention:Some applications require accessory part number 07-03532. See Application Guide for requirements.