You'll definitely need the addition of heat, so the stripe can be stretched.
Get yourself a hair dryer and a helper. Apply enough heat to allow the tape to stretch, but not too much, where it starts to distort. You'll get the feel for it once you start. You should also buy a couple of plastic squeegees. These will help with forcing out the air. Don't worry if you have some small air bubbles that can't be removed. Puncture them with a pin and smooth them out. After sitting in the sun for a few days, they'll totally disappear.