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Rewiring stereo, found something interesting.

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Old 09-27-04, 03:06 PM
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Rewiring stereo, found something interesting.

I've been pulling all the misc. wiring out, and rewiring the stereo properly, and came across this leading to the +12v switched on the stereo. It looks to me to be some sort of capacitor, so I figure it might do some good to leave it in. What do you guys think?

Old 09-27-04, 03:59 PM
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Probably a noise filter...
Old 09-27-04, 04:07 PM
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ground loop isolator = noise filter

They are used on cars with high performance ignition, or shitty stock wiring (where wiring runs absolutely everywhere in the car for no apparent reason [ground *loop*])Basicaly its either a mess of wire, or a certain system component (often times high-performance ignition will cause ground loopp) that causes resistance in the wiring. This resistance creates a hum when amplified through the stereo. Insanely annoying. I've never had a problem with my FC, but the stereo isn't using stock wiring either...

Last edited by Kenteth; 09-27-04 at 04:15 PM.
Old 09-27-04, 04:25 PM
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is that a xfrmr i see on the left?
Old 09-27-04, 04:26 PM
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That is a power supply noise filter, not a ground loop filter.

It is a simple coil and cap, to stop all upper and lower AC on the line.
Old 09-27-04, 04:29 PM
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Originally Posted by Icemark
That is a power supply noise filter, not a ground loop filter.

It is a simple coil and cap, to stop all upper and lower AC on the line.
*DOH*

Hey mark, are GLI the one's with RCA jacks then?
Old 09-27-04, 06:18 PM
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Originally Posted by Kenteth
*DOH*

Hey mark, are GLI the one's with RCA jacks then?
Yep... generally RCA type connection at each end, sometimes also a extra ground wire (depending on brand).
Old 09-27-04, 08:28 PM
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Cool, so it's to provide constant power. I did without it to try and save on clutter, and it isn't required anymore. I went with a direct line running from the battery and a relay to control it. Works like a charm, and now I don't have a billion wires all over the place.
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