Vacuum Wiper Hose Routing

[Gator Alum]

I would like to keep my vacuum wipers. Yes I know they can be problematic and electric is the way to go, etc. etc. But I think I'd like to give these a try first. The wipers rise up and then just stay put. When I turn the switch off, they go back down.

Currently I have two hoses coming out the back of the wiper motor. One goes to the intake manifold directly below the carb. The second comes through the firewall and just dangles there from the PO. I've read about them being hooked up to the fuel pump, but mine obviously does not have those connections. I cannot for the life of me find where the second hose should be hooked up.

I've searched and searched and searched... any help would be appreciated as always!