Internal Reg.alternator on 69 valiant?

Many of the square backs are also higher amp alternators as well. The parts store philosophy is that you are getting a better deal if the give you a higher amp alternator, so you should be happy.

However, your 50 year old wiring may not be up to the added current of a newer, higher amp alternator. Be careful or you could wind up with overheating in your wiring and connections.

If the field current is higher, that probably means it is a higher amp output alternator.