Look on the front roof support down toward the bottom on each side for a hole. The bolt and and rubber grommet goes in the hole and the bottom of the windshield will rest on the rubber to keep it from hitting the cart body. Don't tighten the bolts, just snug them up enough to take any slack out. If the roof support doesn't have the holes you'll have to drill them. Here's a pic of gornomans cart where you can see the bolts and rubber grommets.