Even if you prefer an original vacuum wiper motor for these years rebuildable cores have become very rare and most New Old Stock units are just not obtainable. Even new ones have their lubrication dry after 70 years.
For those that won’t except a slow moving or non-working used vacuum unit, an alternative does exist. New electric motors are now on the market in both 6 and 12 volt styles. The above photo shows a new unit before installation.
You will no longer need the original inside wiper cover plate with the indention. Replace it with the included non-indented style which gives a smooth finish.
The electric wires can be run inside the windshield post to a switch of your choice under the dash.
These kits can be obtained from Jim Carter Truck Parts at 1-800-842-1913.