The hose routing for your car has a couple of dependencies. If it's an early 47 with a vacuum tank, there will be a hose running from a port on the intake (under the carb) that runs to the vacuum tank to a valve that has a second hose running from it to the wiper motor's larger inlet.
If the car is a later model, then you'll have a two part fuel pump with the upper half managing the vacuum. A metal line will run from the left side of the pump to a point above the intake where it meets a rubber line that attaches to the wiper motor. Also, a metal line will run from the port on the intake to the right side of the pump to help the pump develop enough vacuum.
If your car has a single stage pump (no upper vacuum half) then you'll have a line running from the intake vacuum port to a rubber line that attaches to the wiper motor.