Where is the voltage regulator on a 1990 Dodge Dakota?
The voltage regulator is not in the alternator, it is, unfortunately, part of the computer. The field winding in the alternator receives it excitation voltage from the computer. The computer monitors the system voltage and provides what it thinks is the appropriate field drive to keep the battery charged. The bad part about this is that you have to replace the whole engine computer if the regulator portion of it fails (at least $200.00 or more) I know this from personal experience. It might be possible to install an external regulator or install an alternator with built in regulator but you will have to modify the wiring.
