CA HOV stickers - where to stick em ?

Hi all.

I just got my stickers last night and I installed them on the plastic part of the bumper, not the paint. One thing I noticed is that I can actually peel the sticker back off, pretty easily. I don't know if they will stick a bit better when the sun hits the bumper and warms the adhesive, but if they are still easy to peel after tomorrow I am going to have to move them to the painted part of the bumper.

For the guys that installed them on the black part, did you have any issues with the stickers going through a wash, etc?

Thanks!
Fern

Thanks Bolt Action. I just went out and moved them on to the painted surface. I hate trying to get all of them to look even... never happy with how they turn out