Q: Car experiencing battery drainage

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My car keeps dying during the day. It's usually fine during mid-day, and then by evening it's dead. I've hooked up a test light and pulled each fuse, but the only one we so much as get a flicker for is the IOD Sense1 and 2 fuses. Otherwise the light doesn't even dim. I've also hooked it up and checked each fuse to make sure they were in good condition. I pulled each fuse and checked the output and sit at a steady 12-12.5 volts per the multimeter. I've checked every light source. I had the alternator checked. We don't have a switched out alarm that seems to give some people trouble. There's no other sign of a problem except that we obviously have a drain somewhere, but we can't find it. Considering that I individually pulled each fuse, and it must be an electrical problem, shouldn't it have read with the test light? Any ideas?

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