I think that would be a very interesting mod. My ranger had a circuit as soon as you flipped the door handle, a light would light up the keyhole entry and handle. I really did like that feature.

Is there an interior light circuit to the door? Is there an always hot in the door? Considering the small amount of energy a single LED can draw, why not wire it up hot all the time. Have the LED just light up under the handle. As you are walking the parking lot you could see the car at night.

A more practical circuit (logical function) would be an Identify circuit. Push the "IDENT" button on the remote, the running lights and door handles light up. Low key and way cool.