It's been a while, but I installed mine with the lid open. You need to take the plastic off the lid first. I put the bottom on first, then the top. I used a very large slotted screwdriver to get the top one it. Can't do that barehanded. I put the blade end of the screwdriver under something on the frame (the brass looking part). Then I made contact with the end of the spring 2 or 3 inches back from the blade end of the screwdriver and pushed down. When it lined up, I pushed it in. It will probably slip off a few times. Persistence pays off. Hope this helps some. And, yes, I bought my springs at NAPA.