Rumor: Any cars equipped with remote keyless entry systems can be unlocked via cell phone.

Your classic car probably has a lot of features you love, but remote keyless entry is probably not one of them. Fortunately, there are ways to add it.

Instructables user 5hockwave2 shows you how to open the case for your remote, and add some wire—any thin wire should do—with a little solder to the existing antenna.

The kit comes with a keyless entry module with onboard relays for a clean installation, a pair of two-button remote controls, two door-lock actuators with 15 pounds of pull and built in overload ...