Have you ever started a project and it turned into opening up a can of worms? That's exactly what happened with installing wiper arms. First of all like alot of CJ/YJ owners, the factory placement of the wipers obstruct your view. Now granted there are aftermarket kits available to lay the wiper arms down horizontal with the bottom of the windshield and increase the stroke by replacing the linkage arm off the motor shaft. Reviews are all over the place, some have no problem, others end up with a binding of the linkage. This can be the result though of worn linkage bushings and aftermarket windshield frames with improper shaft spacing. Along with the negativity and cost we decided to not take the gamble. I sourced arms from a 

Cherokee Sport which I modified by drilling out the rivet and separated the arm. I then bought new 11" blades because vertically that was the max that would cover the glass. Temporarily fastened in place I played around with the length and ended up shortening it by 4 1/2". The bend in the arm was originally around 15 degs. I increased it to 30 degs. then re drilled the end for the spring and rivet. Fastened it all back together with a rivet and attached the spring using the original metal tab that hooks at the pivot and remounted. It all looked pretty good at this point as far as improved vision, especially in the middle. Except for one thing. Now to open the can of worms. The pressure of the wiper against the windshield was that great that it 

folded over the rubber. My first thought was to go with a weaker spring, and after striking out at the local hardware store I was about to throw in the towel. I hate defeat so I sat back and eyeballed the situation. For some odd reason I remembered a tool to measure wiper arm pressure and it was in the top of my tool box for probably 30 years. (Idon't get rid of anything). Retrieved it and it had instruction on its use. I wasn't aware, but there is a standard of 1 ounce of pressure for every 1 inch of blade put out by the "Highway Visibility Bureau" So I measured the pressure and it was up at 30 ounces. I wanted to use the original springs so I bent up longer hooks that attach to the pivot pins and took a guess and drilled the hole for the spring. I had to keep playing

with spring hole location, along with filing and ended up with 11 ounces of pressure. After several repositioning of the arms I was able to have the drivers side parking at horizontal and the passenger side slightly above, but at least it totally cleared out the center section which was a big plus. So was it worth it? I only got $20.00 into it, didn't have to take out the motor to replace the linkage arm, but a s#*t load of time. Ah what else was I going to do, paint the house foundation?