My idea for those civ wiper arm indentations is using them to locate washer fluid sprayers. Not being able to wash the window while driving really annoys me. Sound like an idea? Any takers?
The military solved that problem and put a kit in M151A2 M35s 5tons etc. It is a windshield washer kit. Comes with everything you need. Tank, tubing squirter and a hand pump. Its cool. Check with surplus places maybe saturn might have them. They go for $20-$30 bucks. I've installed them in many a truck and have enjoyed clean windows...