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The hose terminates at two spray nozzles that is attached to the cowl cover with a screw. It sprays on the windshield from the nozzle and does not connect to the wiper.I lived in Hampton, VA when I was stationed there for the Air Force.
Yes there are plastic clips used on the later versions. They are thin and typically dry rotted. I don't know of a source for them.
The later design windshield washer plumbing has a hose nipple immediately adjacent to each wiper arm axle that protrudes ~1" from the cowl. The nozzles are built into the business end of the wiper arms near the wiper blade attachment pins. The hose "clip" was more like a 4" long conduit that snapped onto the arm from below. You may be able to fabricate a makeshift replacement from some UV stabilized black plastic tubing.
If the local parts stores have it, perhaps the forum's store will also have it.