Older bikes like my 74 are held on with two small screws, newer ones are fixed on with molding adhesive.
Don't try a pry them off, you'll snap them in two and probably pull off some paint. Use a hot air gun to soften the glue then gently peel them off. 3M sells double sided tape made just for auto moldings, works great. Buy at auto paint supply stores.
I can see November from my house