Dual Laser-Guided Parking System

This is a great way to park  in your garage without the hanging tennis ball.  You know the one your kids use for batting practice, that only lasts one day.  

This system uses a small laser mounted on the ceiling that guides you into the garage and helps you park in the right spot every time.  The lasers are powered by the garage door opener light so it is only on when the garage door opener light is on.

Parts List
2 - Laser Lights (I used two 5mW laser diodes from http://www.dealextreme.com) however you can use any pen laser light
2 - Insulator tubes for laser diodes, not needed if you use laser pen
1 - 2 Outlet Lamp Socket
1 - DC wall transformer (3.5 to 4.5 Volts DC is what most laser lights run on. If you can't find a wall transformer between this voltage you will need to make a voltage divider to get the correct voltage)
2 - Angle L-Brackets (Laser mounts)
2 - Small gauge two conductor wire ~ 6 feet long (Like an old telephone cable)
4 - 2 conductor terminals

Step 1: Identify the power requirements for your lasers

I bought my lasers from www.dealextreme.com item #13378 for about $1.50.  These lasers run on 3.5 to 4.5 Volts and are 5mW. 

However, if you already have a pen laser light, that would also work out great since you don't have to build the insulated housing.