Convert your car tail lights to LEDs

Depending on what kind of car you have, there may or may not be a complete LED conversion kit available that would replace the entire lens, bulbs, and wiring with a whole new LED-based taillight assembly. This is the way to go if it's available.

If you have an old Mustang, for example, a company called Classic Mustang makes a slick replacement assembly. If your car is more modern, you'll probably have to Google around and hope that a company in the nascent aftermarket sector makes one for your vehicle. Frankly, the odds are long.

Another way to go, however, is to replace the bulbs in your existing taillight assemblies with LED bulbs. These might not have the same kind of light dispersal as a standard bulb, so make sure you can return them if you find they don't fill the taillight with even illumination. If they do work out, you'll get the long life and instant on/off action that LEDs are known for.