andom LED Flasher - Robocop

[grandmasteralok]

Hi.

I am planning to build a 2-LED flasher like the light bar on Robocop's Ford Taurus police car.
If you'd notice in the movie, the police car has 2 lamps flashing alternately but at a random rate.
I'd greatly appreciate your help.

Basically, the 1st LED will flash, then after a random number of seconds, the 2nd LED flashes, then after another random number of seconds, the 1st LED will flash again. The process will just repeat. The flash behavior will be the same as a camera's flash.  ;D

Note: I do not have the knowledge nor the equipment for a programmed version. Please no programming. (* ", *)

The circuit will be powered by a 9-12v DC. The LED's are the 3v ultrabright 5mm red and blue.

Also, please include the parts list.  ;D

Thanks a lot.