When I first saw the Chrono Pak, I figured that the round idiot light within the fuel gauge part must be the "Low Fuel" warning light. Now I have noticed that when I start the car, and the idiot lights all go on to indicate that the bulbs are working, the line on the "0" of the chrono pak fuel gauge lights up for an instant, and the round light does not. Since a lot of those idiot lights are turned off in the U.S., does this mean that the "0" line will light up when the reserve level is reached, and the round light does nothing?