Thanks. All work done by one of the most experienced mechanics for collector cars in Florida, so sure the voltage regulators were defective.
First one kept generator from suffiently charging, but don't recall details. Second one would not allow generator to charge after cold start until after about 10 miles suddenly went to max charge on ammeter. Ammeter would previously show discharge with lights on.
Third one after about 100 miles, cut off control failed when car shut down, with obvious results.
Hope the new one works. Would buy NOS as standby if available.

Two were unreliable charging. One was cut off stopped working.

Just installed fourth voltage regulator.
Echlin VR45. Hope it works.

Four different brands, but appeared identical. Previous "Standard Ignition" cutout failed. First two unreliable charging control.

I would stockpile OEM Autolite if found.

Were tire nozzle caps plastic or metal in 1947?

1947 Custom. After starting, ammeter stays in middle, but shows discharge if turn on lights. After several miles, usually goes to full charging until shut down.

My other cars always go to full charging after juice used in starting, then gradually drop to mid range.

Do I have a problem?

Probably not the same, but my annoying squeak was the speedometer rubbing on the dash trim. Needed grommet to isolate it. You can tell by pushing on speedometer when squeaking.

Back in the day, my 1947 Packard Custom Super Clipper Club Sedan and my 1941 Cadillac 62 sedan would have worn 700-15 bias ply tires.
Aspect Ratio (A.R.) 90
Tread 5.38
Load 1700
WWW 4-1/8"

I much prefer radials and now have Coker's "Classic" 235/75R15.
A.R. 75
Tread 6.58
Load 2025
WWW 3-1/8"

I think Coker's more expensive radial "American Classic Bias Look" 760/R15 might provide easier steering at low speeds and parking.
A.R. 80
Tread 4.35
Load 1710
WWW 3-1/4"

Any experience or comments?

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My Clipper is restored with carpet on floor of trunk. The sides over fenders are not covered. Would like recomendations. This is not a judging issue for me.

great info thank you

Upper right dash knob (above heater controls) on my Custom Super Clipper is an unused knob labelled "Fresh Air". Any idea what it was used for? The only fresh air is cowl vent that I am aware of. Anyone have that knob with different inscription?