A Cap doesn't turn on or off unless you have something rigged up to do that. The only thing on the cap that should be doing that is the voltage display circuitry, which should be on some type of voltage sensing circuit to turn it on when the car is started. The display on the cap should then go off after a period of time. At least that's how mine works... So just because you see a voltage on the cap doesn't mean that it is passing current to the amp. And there should be no remote wire going to the cap. The cap will be hot (meaning voltage across the post) all the time when the amp isn't on there is no current flow...now if you have the remote wire on the cap then you could be causing you amp to stay on even though the car is off which could be killing your battery over time. Just my two cents! Hope you figure this out...it will be interesting to know what is causing this.
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