I just installed graphics about 2 weeks ago this is what i did.
#1 Make sure you are working with clean hands. Dont want and dirt or anything getting on the adhesive
#2 Buy Windex, i do believe soap and water works to but i used windex.
#3 Wipe the surface off that you are going to be installing the graphics onto.
#4 Peel the backing away from the graphics and place the graphics on something that you can rest them on. Do not put the sticky side down on the object that you are going to rest them on. (Common Sense There) but anyways spray the windex on the sticky side of the graphics and the surface you are going to apply the graphics too.
#5 Place the graphics on the bike and work out the windex, i used a wash clothes and worked fine. It is very wet in the beggining and will probably just start to slide right off, dont worry about it, as soon as you start working out the windex it should start to stick little by little.
thats the way i did it and they came out fine.
Marc