Neither. The voltage regulator lives inside the Engine Computer. Some cars in this era had the Engine Computer split into two modules. The Logic Module was behind the right kick panel and the Power Module was under the hood by the battery.
Measure the voltages on the two small terminals on the back of the alternator while the engine is running. One will have full battery voltage. The other one is the key. A shorted voltage regulator can only draw the voltage down to around 2 - 4 volts. If you find 0 volts and it's overcharging, that wire is shorted to ground.
Friday, February 25th, 2011 AT 11:31 AM