Thanks for the help on the GEN light. I still don't have the problem solved. I have done the following:
1) replaced the alternator
2) replaced the regulator
3) checked all my connections between the battery, regulator, alternator and starter.
4) I charged the battery to 13.7 volts, then put the new alternator on.
5) with the motor off and the ignition on, I get 3.7 volts to the first terminal on the regulator, 5.7 to the 2nd, 13.7 to the third and 5.7 to the fourth, is this ok?
What is the next step to finding the problem? I don't want to drive my car anywhere for fear of getting stuck.