| How can you tell if a car audio capacitor is bad?

How can you tell if a car audio capacitor is bad?

MystWlker asked the question:

Car audio system - 2 550 watt amplifiers, 2 10″ subs, 2 250 watt 6×9s, 1 .5 farad capacitor, upgraded battery and alternator. After installing the capacitor according to the manufacturer’s wiring diagram, I find that the car battery is draining while parked with the system turned off. The amps are powering off, the only apparent cause is the recently added capacitor. After removing the cap from the system, the battery drain appears to have stopped. Is this normal for a capacitor to drain the battery under these conditions, or could it be malfunctioning?

thanks
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Comments

6 Responses to “How can you tell if a car audio capacitor is bad?”

  1. Logan on February 8th, 2009 11:05 am

    Sounds like the capaciter is doing its job, its charging from the battery, if its not fully charged before the car turns off, it will continue to take in electricity.. unless it has a bypass for when the car is off, some cheap ones dont..

  2. Pianoman on February 11th, 2009 9:05 pm

    If it stops working.

  3. djmascia on February 14th, 2009 7:16 am

    no but a buddy of mine put a cut off switch in the system to solve that problem

  4. KaeZoo on February 15th, 2009 9:03 am

    The capacitor itself shouldn’t be causing a battery drain; but if it has a built-in voltmeter or display, that may be staying on when it shouldn’t.

  5. Me on February 15th, 2009 12:35 pm

    The battery in my truck is always going dead. I always thought it was the alarm system but after reading this I might just of needed to take the cap out. Thanks.

  6. Living the Life on February 18th, 2009 2:57 pm

    yes it has to be the manufacturer cause the capacitor is messed up