I was going to use the flash-to-pass button for my door opener but got skeered of the wiring (don't like messing with wires much).
Decided to drill a hole in my glove box door and install a button.
Only spent about $2.49 for some sticky back velcro.
The button was lifted from an old flashlight and installed into the glovebox lid sealing it from the inside, glued a small plastic bead onto the door opener button and stuck it to the inside of the glove box so that the bead is up in the new button. Easy removal for battery change and I didn't have to splice any wires........