Can you identify this?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=14897
Printed Date: May 19, 2025 at 7:56 AM

Topic: Can you identify this?

Posted By: chrispchang
Subject: Can you identify this?
Date Posted: June 13, 2003 at 11:48 AM

Please help me identify this mystery black box. It has switched power and ground going into it, and then out of it to the radio. The only markings on it are the letters HDE and two arrows both pointing towards the radio.

I just finally pulled this radio from my 1984 Jeep CJ-7. As you can see the wiring by previous owner was a mess. Am replacing with an Alpine head unit. Just want to know if this black box serves a purpose and if I might need some sort of similar device with my new setup.

My only thought was it might be a big capacitor to store energy for better bass or something.

Thanks for the help. - Chris

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Replies:

Posted By: the12volt
Date Posted: June 13, 2003 at 11:51 AM

It's an inline noise filter. I haven't seen one of those in a while ;)

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Posted By: chrispchang
Date Posted: June 13, 2003 at 11:56 AM

Thanks! guess I won't be needing that anymore.

Talk about quick response too!

Chris

Posted By: the12volt
Date Posted: June 13, 2003 at 12:27 PM

You're welcome ;)

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Posted By: the12volt
Date Posted: June 13, 2003 at 12:29 PM

BTW, I'd leave it on there or at least keep it handy. You may find that you need it after you install the radio.

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