I bought this pump to replace my harbor freight pump on my portable two piston scissor lift, worked perfectly. The two top bolts on the plate fit perfectly, I did had to drill extra holes for the bottom. The wire colors are odd but easy to sort. the small light green is ground and connects to Green. The Red connects to White and the dark green connects to black. The connector for the pressure hose did not fit my hose but I was able to remove the tip of the extra fitting that was in the box with a grinder and use the original o-ring for a leak free fit.