Blue Sea 8242 Shunt Adapter for DC Digital Ammeter [8242]Shunt Shifter Shunt Adapter for DC Digital Ammeter positive side shunt applications, such as alternator measurement The Shunt Shifter is designed for use with Blue Sea Systems 8255 Digital Meter Shunt Advanced technology shifts the shunts positive reference to negative as required by digital meters Easily installs directly onto shunt using existing sense screws Ideal for use with 12 36 Volt DC systems Includes all necessary hardware WARNING: This