My Haynes manual and Chilton manual both say the voltage regulator is inside
the alternator. Anyway, you also said you thought the small wires could be
bad. As it turns out they were the problem, but only because I had not tightened
the small nuts to hold the contacts tight. I'm going to accept your answer.
The main components of the alternator are the rotor, stator, rectifier, end shields and drive pulley. Direct current is available at the output "B+" terminal. Alternator output is controlled by voltage regulator circuitry contained within the power and logic modules of the Engine Controller.