The first time I unbolted the oil tank for this installation. I found the need to make some changes in how I ran the wires, and found an easier way the 2nd time. If you look down on the side of the boat in front of the oil tank, you see the black box that the spark plug wires attach to. There is a single bolt holding it down. Remove it and you can pull the box up and out of the way. Leave the wires attached. Next step it to take the new tray and squirt a half tube of liquid nail onto the underside of it. Make sure to outline the tray then just criss cross and squirt all around it. I cleaned the area where it would sit just by using a rag and alcohol. Test fit before you add the liquid nail. Now slide the tray in. Make sure you have the strap lined up correctly on the underside. I used masking tape to hold it in place. Sit something heavy on the tray and let it sit. here