MP3298 Magnetic Pickup (20700162) BUZZER / FLASHING The 20P-150 Pressure Swichgage is

The 20P-150 Pressure Swichgage is a 2" dial

RPM data is supplied by either a Murphy magnetic pickup or by the alternator in your battery charging circuit

an environmentally sealed case with two Deutsch DT style connectors molded into the case and green LED backlighting

the liquid in the sensing bulb changes to vapor creating pressure against the diaphragm mechanism

no bulbs to change

MP3298 Magnetic Pickup (20700162) BUZZER / FLASHING The 20P-150 Pressure Swichgage isMP3298: Magnetic Pickup, 3" total length, 3" threaded length, 5 8 18 UNF thread size (20700162) The MP3298 Magnetic Pickup has a total length of 3 inches, threaded length of 3 inches, and thread size of 5 8 18 UNF. It replaces 20 01 0080 and MP100. The leadwire hookup measures 12 inches (305 mm). Magnetic Pickups supply RPM data to a tachometer when mounted at the flywheel ring gear of an engine.