that's normal for the radio - try it again and you'll notice that it displays "1 Hour" when you turn it on with the key off.
A test light is okay for basic live/dead tests, but if you can get your hands on a digital multimeter, that will tell us more. If you search the forum archives, you'll find some typical amp readings that other users have observed on their Focii.
Whether you're using a test light or ammeter, note that the vehicle electronics will reboot and enter a state of high activity for several minutes after they are re-energized. Therefore, ignore the initial tester behavior, and then make your observations after the electronics have settled into their steady-state operation, in the sub-amp range. If you're seeing greater than an amp, then systematically pull fuses in both boxes. Don't turn on any high-load accessories or you'll probably blow the fuse on your multimeter.
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