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Anyone Know What This Is?

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Old Apr 18, 2023 | 01:08 AM
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Default Anyone Know What This Is?

Found this while cleaning up my console wires. Top part connected to the yellow power wire for the radio, and bottom was attached to the positive end of a combined positive and negative wire that spanned maybe 4ft but was hooked up to nothing. Thinking it’s a capacitor for radio noise
suppression but not sure. Also, not sure what the other end went to and why it’s not hooked up. Rear speakers maybe?



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Old Apr 18, 2023 | 05:23 AM
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Aftermarket!
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Old Apr 18, 2023 | 06:02 AM
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Maybe follow the wire. Seriously, no idea what Bubba and his cousin Gomer did.
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Old Apr 18, 2023 | 08:23 AM
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If you have an aftermarket radio, it may be an added rechargeable battery. If so, it would be used to keep the clock and stations in memory in the event the main battery was removed. Just a guess. Jerry
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Old Apr 18, 2023 | 11:23 AM
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I’ve followed the wire and it leads to nothing plugged up on the bottom end and up on the top end it just intersects the yellow power wire for the radio.

It’s wire wrapped around a weird stone type material so I don’t think it’s a battery, but maybe I don’t know for sure. The cars had 12 owners, so bound to have some crazy stuff.

Last edited by 78VetteSuperFan; Apr 18, 2023 at 11:32 AM.
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Old Apr 18, 2023 | 11:49 AM
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I believe it's a noise filter for the radio.....

60
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Old Apr 18, 2023 | 12:34 PM
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Originally Posted by 1860army
I believe it's a noise filter for the radio.....

60
yep - a coil to clean up the "alternator whine" in the sound system
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Old Apr 18, 2023 | 02:49 PM
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If it’s a noise filter, which makes sense, how do I hook it up? Just the top part to the yellow wire and bottom to something else like before? Still unsure what the long wire I found on the bottom portion could’ve gone to
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Old Apr 18, 2023 | 09:44 PM
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Originally Posted by 78VetteSuperFan
If it’s a noise filter, which makes sense, how do I hook it up? Just the top part to the yellow wire and bottom to something else like before? Still unsure what the long wire I found on the bottom portion could’ve gone to
You'd be better off tossing it. Run the power and ground directly to the battery - fusing as close to the battery as possible- and size of fuse picked on the size/gauge of wire used. See chart
A much better way of solving the noise issue



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Old Apr 19, 2023 | 12:08 PM
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Yup that’s a choke or inductor, the current stabilizing brother of the capacitor.

It’s useless junk for this attempt at an application. Probably making RF interference worse for the radio.
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Old Apr 19, 2023 | 01:47 PM
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Back in the day, you really needed these to clean up and block the engine electronics noise coming through the radio.
With newer sound systems they aren’t necessary as long as you wire them per the manufacturer’s instructions or as Richard suggested above.
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