You can do something similar or just go to the radiator with standard coolant tubing as I did.

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It needs to be routed back into the cooling system. It can be done in many ways, but I routed mine to the steam vent tube on the AutoRad radiator with standard coolant hose and hose clamps.

I have since learned that you can find pre-bent coolant tubing at the local parts store.

This is a much better alternative because it removes many of the clamps required with a plastic elbow.