So your meter isn't actually frozen but the generator will not charge? If you don't know the answer then you have to start there. With the engine running well above idle, you should have somewhere around 7.2 v at the bat terminal on the regulator.

1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed

My Chevy Master 4 Door is on the Road!