If the 65 has the original system it has an external regulator.
So you could have a problem with one or both. Do the tests with a meter and isolate the problem, it's much cheaper that way than throwing parts at it.
I saw the ice road episode and since it was a diesel it could run without batteries, probably had no lights though. Alternators do not create electricity like the older generators did, they need power input to get something out.
Fred
Last edited by rfs56trk; 12/09/2007 5:28 PM.