Where is the voltage regulator located on 1992 dodge ram 5.9 cummins diesel?

On a 1992 Dodge Ram with a 5.9 Cummins diesel, the voltage regulator isn't a separate, easily accessible component like in some vehicles. Instead, the voltage regulator is integrated into the alternator itself. You won't find a standalone unit. To replace the voltage regulator, you'll need to replace the entire alternator.