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Discharging a capacitor and the install of one

Old 12-16-2008, 05:17 AM
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Discharging a capacitor and the install of one

Can someone please refresh my memory on how to discharge a capacitor and also how to install one as it is has been ages since I've done one. A friend o mine wants me to install it in his truck. he had it in his last vehicle and had his stereo shop remove it so I don't know if they discharged it. Does this matter? Please advice.
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Old 12-16-2008, 05:49 AM
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Hey, I would try hooking it up first, if they didn't discharge it then it should still be good to go. I had mine sitting for almost 2 years in the house. Never discharged it when I removed it, just put it back in, put the power to it and it fired right up and has had no issues since. I will check when I get home and see if I can find the resister I had for charging mine. If I can actually find it you are more than welcome to borrow it if it is needed. Try it first tho as I doubt they would have taken the time to discharge it.
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Old 12-16-2008, 08:05 AM
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to discharge just connect both + and - together and make a spark. install and recharge with a resistor or a little 12 volt light till it dims out
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Old 12-16-2008, 08:23 AM
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Originally Posted by danyman View Post
to discharge just connect both + and - together and make a spark. install and recharge with a resistor or a little 12 volt light till it dims out
DO NOT CONNECT + and - together unless you are trying to blow it up. As for charging a resistor or a light in series with the + will work.
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Old 12-16-2008, 08:29 AM
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Connect it to your amp, leave the REM wire on, disconnect wire from battery to cap. Turn on your amp
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Old 12-16-2008, 10:19 AM
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it wont blow the cap lol the teacher showed me to do that. yes it makes a spark but IT DOES NOT BLOW IT. i did it for mine and then recharged it for install and its fine
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Old 12-16-2008, 01:10 PM
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as i recall, the same resistor used to charge the cap can be touched between the + and - posts, but why would ya? still seems like a good way to break stuff
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Old 12-16-2008, 01:15 PM
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wire a light between the + and - when it goes out its discharged
wire the light between the + post and the battery, when it goes out its charged
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Old 12-16-2008, 01:39 PM
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or ditch the cap and buy a batt
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Old 12-16-2008, 01:50 PM
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this needs to be done very carefully, bring it to me and i will discharge it for you for $20. Also can install it for you for only $80. Or for $100 I can do both.
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