The answer is yes! There are actually two ways that strap-ons can vibrate in order to pleasure everyone. In the first method, a small motor powers the dildo-shaped toy itself, vibrating inside the pussy of the person being penetrated. The vibrations provide users with a greater sense of pleasure and cause them to experience an even more intense orgasm.
With a second method, a strap-on harness is equipped with a small pouch or flap made of cloth. During use, a vibrator (usually a bullet) can be tucked inside this pocket and activated. It allows the person "on top" to feel the pleasurable vibrations and go into orgasms as well!