Wiper vacuum motors

[Colorado kid]

I have a few of these, unfortunately none are correct for my 1929 5 window coupe. Does anyone have an idea what they may go to?
I’m looking for a unit for my A, whether it’s a vacuum or 6v electric.
All are trico, all rotate, 2 work perfectly under vacuum.
Top 2-One has ksb3820 I.d. & black one s831

 

[Colorado kid]

Sorry, only two work perfectly under vacuum

 

[rotorwrench]

Many vehicles used them but the model A types were distinctive to either open cars or closed cars in the way they mounted. Even later Jeeps used a similar small wiper motor. The larger ones were in later cars and trucks. The 29 coupes were supplied with electric wipers by Ford but the vacuum ones could be installed as replacements. Closed cars had mounting arms on them. Open cars vary with black painted or chrome finish depending on model.

 

[Colorado kid]

By design I figured they were mounted inside, likely an open cab. I’ll have to make a run to Bert’s and see what Steve has.