On Car Test
- Disconnect battery cables and install cutout switch, variable resistance, ammeter and voltmeter as shown. Connect ground cable and check that cutout switch is in closed position.
- Start engine and run at test RPM. Adjust variable resistance to give the following amperage readings: Models with 65 amp alternators - 45 amps, with 55 amp alternators - 25 amps. Open battery cutout switch to separate battery from test circuit. Load current is now determined by variable resistance.
- Readjust variable resistance to provide Test Output Amperage. Voltage should be as specified.CAUTION: Never run alternator without battery connected unless variable resistor is installed to provide load. Alternator or regulator or both could be severely damaged without providing current load.