head unit to 12v dc converter?
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=95440
Printed Date: May 14, 2025 at 4:44 AM
Topic: head unit to 12v dc converter?
Posted By: strike2
Subject: head unit to 12v dc converter?
Date Posted: July 08, 2007 at 1:37 PM
I have a 12v (dc) convertor which turns a regular wall outlet into 12v (constant). How could I hook up a head unit to this? I know the yellow wire goes to (+), black is ground, but I have no clue what to plug the red into, any help would be great.
Replies:
Posted By: the12volt
Date Posted: July 08, 2007 at 1:51 PM
Yellow and Red both go to positive (+). There is no switched lead, unless of course you leave the power supply on all the time and add a switch between the positive output of the power supply and the red lead of your head unit. -------------  the12volt • Support the12volt.com
Posted By: strike2
Date Posted: July 08, 2007 at 4:22 PM
the12volt wrote:
Yellow and Red both go to positive (+). There is no switched lead, unless of course you leave the power supply on all the time and add a switch between the positive output of the power supply and the red lead of your head unit.
Thank you, this worked like a charm, except now I cant go past volume 30 or raise the bass without it blinking and turning off.
Posted By: haemphyst
Date Posted: July 08, 2007 at 4:35 PM
That means your power supply is too small. If you want to do this, you have to have a power supply with a higher current capability.
No, there is no other way around it. This is what must happen if you want to run the deck to full capacity.
What is the manufacturer and model number of your power supply?
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: strike2
Date Posted: July 08, 2007 at 7:08 PM
haemphyst wrote:
That means your power supply is too small. If you want to do this, you have to have a power supply with a higher current capability.
No, there is no other way around it. This is what must happen if you want to run the deck to full capacity.
What is the manufacturer and model number of your power supply?
Its an AIphone convertor...used for intercoms so I figured it wouldnt hold much, what are other options, I think I have heard of using a computer power supply.
Posted By: haemphyst
Date Posted: July 08, 2007 at 8:55 PM
Go down to Radio Shack, and pick up a 15A power supply. I think they're about 80 bux.
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: strike2
Date Posted: July 09, 2007 at 12:08 PM
haemphyst wrote:
Go down to Radio Shack, and pick up a 15A power supply. I think they're about 80 bux.
Will I be able to hook an amp to this also (small alpine amp and 12' pioneer premier)
Posted By: the12volt
Date Posted: July 09, 2007 at 12:36 PM
Not likely. If you want something beefy enough to handle your head unit and an amp, look here: https://www.astroncorp.com/linear.shtml. I use an Astron RS-70A to run the system in my garage. ------------- the12volt • Support the12volt.com
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