You need a DVOM to perform testing. Set DVOM to 20 volts range and use positive probe on alternator terminal P ( RED wire, thickest in diameter) and ground the other probe to any body or gnein portion. If charge is also 12 vlots or so, the alternator is bad. If you jave more than 13.5 volts, the fusible link from starter solenoid to alternator is bad or you have an open circuit.
Repeat with DVOM with positive probe on positive terminal of battery and negative on negative terminal.
Engine must be running while performing test.
Tuesday, July 9th, 2013 AT 8:23 AM