Mounting stem: 1/8"-27 dryseal thread. Operation: circuit 1 – terminal 2 normally closed to ground, opens at 2 - 8 psi (13.8 – 55.2 kPa); circuit 2 - terminals 1 & 3 normally open, close at <11 psi (75.9 kPa). Replaces AMC 331347, Chrysler 3747431, Delco 14057554, Jeep 4186352, Motorcraft SWG-1708. SPST, Insulated, Normally Off