Before you install the wire into the tubing, grease the wire liberally. This will ensure smooth, reliable operation. Grease the wire as you feed it into the tubing so you dont get any grease on the interior of your Corvette. The wire is the proper size for the tubing. We didnt have to cut the tubing, but if you find you need to, make sure the wire doesnt stick out of the tubing on the end. Also, do not install the wiper arms yet because the transmissions will spin 360 degrees several times as the wire is installed. It may help to have a friend spin them as you feed the wire.