cars that have the windshield washer sprayers on the wipers themselves.

I've done the ziptie thing... on my B-body, because the little plastic ones that clip to the arm tend to break when you sneeze too hard.

I know a guy who's replaced his Samurai's factory windshield "splurter" with lines zip-tied to the wiper arms, and it works well...I plan to do the same on mine.

My 2004 Grand Am has them.

If this plan fails you for some reason, it seems like I remember seeing older vehicles that used a small metal line poking up out of the cowl, bent back to aim at the windshield, and the end squeezed down sorta flat to give the desired spray pattern. I like the fixed sprayers better than the ones mounted to the arms, but thats a personal preference thing.

Dodge Shadows/Spirits/Dynasties and their Chrysler/Plymouth equivalents also had them.

Come to think of it, those sprayer-on-wiper setups worked far better than any sprayer on the hood I've ever used.