I have a 50 Ford F1 with a single vacuum wiper. I don't know if a second wiper wss an option or not, but I have a question about the single wiper motor. It has 2 brass tubes in the top cap, the larger one is attached to a vacuum line going to the engine and this powers the wiper motor. The smaller tube was open-ended with no cap. What is the purpose of this tube? Did it provide vacuum to a second wiper motor, if installed? Should it be capped? The wiper motor appears to have a filtered air inlet at the bottom of the blade well to provide air to the side opposite the vacuum. Does this tube serve any useful purpose? Does it have any effect at all on single wiper operation, if left uncapped? Thanks!

 

I forget the reason for it, maybe intake? But it is needed open as you found it. I had the same question on mine.

Ed
near Philadelphia

 

Thanks Ed, I guess I'll leave it like I found it. :-)

 

Yes, it is an intake. Do not cap it.

The second wiper was an option and it is not a second motor rather scissor-type linkage.