If your pad has any clips holding it remove them so as to reuse them on your new pad. Clips or not the hood pad is held in place with glue. The first thing is to make sure that the old pad I is removed as well as possible. You can do this carefully with a scraper or putty knife. Be sure you stay aware that the outside of the hood is on the opposite side. Scraping to hard or rough can mean a dimple on the hood surface. After scraping the old pad off I suggest you wash the underside with a detergent or even dish washing liquid. Then rinse it off with a hose. Be sure the rinse is good and dry even if it is the next day. A regular automotive weather strip adhesive that is available at your local Auto store is used.  I myself like a regular construction adhesive such as liquid nails because it is easily available at a hardware store or even Wal-Mart. I like the construction adhesive for a few reasons. It is less expensive. Goes on easier and does a neater better job.  I use a tile glue spreader ( kind with the teeth ) for an easy uniform spread. If you do not have or want to get one,  I have also used a small piece of cardboard. I also use a calk gun to first neatly apply the adhesive before spreading even.

I suggest you have a dry run on the install of the pad so you have a plan knowing what and how you do it before you actually apply the glue. I do this because once you have the glue applied if you are wrong the glue can make the decision on how it is on the hood not you.

PS By the way a customer has remarked, AND IS RIGHT, that if you are using liquid nails or similar construction adhesive tube you wll need 2 to 3 tubes.  You can always return it unused but you gotta have enough once you start.

Hope this helps and feel free to ask any other questions you may have.

Thanks--- Rudy