TM 9-2320-360-20-1 WARNING Remove rings, bracelets, watches, necklaces, and any other Jewelry before working around HET Tractor.  Jewelry can catch on equipment and cause injury or short across electrical circuit and cause severe bums or electrical shock.  Batteries can explode from a spark. Battery acid is harmful to skin and eyes. WIRE NO. 1373 VOLTAGE TEST NOTE Arctic Kit pump switch must be positioned to on to perform this test. (1) Place positive (+) probe of multimeter on wire no. 1373 at coolant pump. (2) Place negative (-) probe of multimeter on ground and look for 22-28 volts on multimeter. Check no. 1435 ground wire from coolant pump to batteries for loose connections or damage. CONTINUITY TEST (1) Disconnect wiring from com ponents at each end of wire. (2) Set multimeter to ohms position. NOTE A reading of infinity indicates an open circuit. (3) Connect multimeter leads to each end of wire and check multimeter for continuity. NOTE A reading of other than infinity indicates a grounded wire. (4) Remove multimeter lead from one end of wire and connect to chassis ground. WIRE NO. 1373 TEST NOTE · Arctic Kit pump switch must be positioned to on to perform this test. · Test is made on terminal of switch with wire that goes to coolant pump fuse. (1) Place positive (+) probe of multimeter on no 1373 wire at coolant pump switch. (2) Place negative (-) probe of multimeter on ground and look for 22-28 volts on multimeter. Change 2  2-981