I just got the Flash2Pass transmitter/receiver, and it works great. Had to add the power supply because of my model opener, but I just used a radio shack multi-voltage power supply and it worked fine. To install the transmitter in the headlight, I used my multimeter to find which wires got voltage when flashing the brights. Solderless wire taps provided, make it easy. So to open the garage door, I just flash my brights twice. Works fine. Only complaint might be that I would prefer a little more range, but it's the same range as my regular Garage Door Opener remotes. With this approach there's nothing to waterproof. Nothing external, exposed to weather, gets modified. Works well, easy install.
http://www.f2ptechnologies.com/ -=- Mike
