Creating a Remote using your factory HU
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=34210
Printed Date: July 25, 2025 at 1:54 PM
Topic: Creating a Remote using your factory HU
Posted By: bigshaffe
Subject: Creating a Remote using your factory HU
Date Posted: June 19, 2004 at 7:15 PM
Recently I installed a pair of Rockford Fosgate 10'' Subs in my trunk with a Punch 250 Amp using a Line Out Convertor and splicing into the gray clip plugged into the Monsoon Amp. I had read on a VW site somewhere someone recommended using the CD Changer wire harness in the trunk and taking the power wire from that and using it as a Remote. Well, I did and it was successful for about two weeks until my cd player started ejecting the cd's giving me a CD Error 1 for about 50 different cd's wiht no scratches and perfectly clean. I have a 2003 VW Passat. I just had the head unit replaced at VW, and I don't want to take another chance doing that again, so I was wondering if anyone knows how to create a remote for your amp other than from the head unit and cd changer wire harness? Your assistance would be greatly appreciated. Andrew ------------- Andrew S.
Replies:
Posted By: Planetium
Date Posted: June 19, 2004 at 8:42 PM
You could always tap a 12V negative wire off of your battery and put it on a switch on your dash, just flip the subs on when you need them. Personally, though, I'd get a decent head unit.
Posted By: lilboi
Date Posted: June 19, 2004 at 10:35 PM
use the one that controls your antenna wire. or get the 12volt remote wire that goes into your deck.
Posted By: auex
Date Posted: June 20, 2004 at 12:32 AM
Planetium wrote:
You could always tap a 12V negative wire off of your battery
Huh? Your cd player problem is probably unrelated to this, unless you tapped the wrong wire. You could wire the remote turn on lead directly to the acc wire at the ignition harness.
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Posted By: bayareastereo
Date Posted: June 20, 2004 at 12:04 PM
lilboi wrote:
use the one that controls your antenna wire. or get the 12volt remote wire that goes into your deck.
I have a VW Golf, and this antennae power wire was perfect. It actually goes back to the ignition accessories lead anyway, but provides enough juice to power my 5-channel. This is what I would recommend using if you have a VW.
Posted By: bigshaffe
Date Posted: June 20, 2004 at 8:00 PM
Thanks for your help. I think I will run a separate wire from the battery and put a switch up front, that seems to be the safest option for a remote if the factory HU doesn't have one. It has to be the negative terminal on the battery though right? ------------- Andrew S.
Posted By: customsuburb
Date Posted: June 20, 2004 at 8:45 PM
NO, I would use the ignition wire from behind the radio. It should be a yellow wire with a red stripe. This way you won't have to worry about forgetting to flip a switch everytime you turn your car.
Posted By: kgerry
Date Posted: June 21, 2004 at 10:00 AM
use DEI's 55000 is does exactly what you want it to.... generates a remote turn on voltage from a factory HU
-------------
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
Posted By: bayareastereo
Date Posted: June 21, 2004 at 6:24 PM
Also, what you could do is buy an Add-A-Circuit from the local auto store. I just came across these the other day, basically goes right into your fuse panel and has a wire lead which you can then run to the head unit. Just use an empty spot on the panel that has 12v when key is turned on. Also would want to make sure about the size of the fuse in the specific spot (refer to manual). Just another thought.
Posted By: bayareastereo
Date Posted: June 21, 2004 at 6:25 PM
Sorry, the wire lead from the Add-A-Circuit you would obviously want to run it back to the amp, not the head unit. (my bad)
Posted By: uz2bauto
Date Posted: June 21, 2004 at 7:41 PM
customsuburb wrote:
NO, I would use the ignition wire from behind the radio. It should be a yellow wire with a red stripe. This way you won't have to worry about forgetting to flip a switch everytime you turn your car.
this is the way i would do it ------------- paint and body
"semi-professional"
Posted By: kgerry
Date Posted: June 22, 2004 at 9:38 AM
true EXCEPT if the amp is subject to any kind of engine noise you have to listen to it all the time, even with the radio turned off.....which is why i suggested the 55000 from DEI...it does exactly what you want it to....generates a remote turn on voltage but is switched on and off with the head unit thru an AC detect circuit tapped off any speaker wire.....
-------------
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
Posted By: bayareastereo
Date Posted: June 22, 2004 at 4:30 PM
uz2bauto wrote:
customsuburb wrote:
NO, I would use the ignition wire from behind the radio. It should be a yellow wire with a red stripe. This way you won't have to worry about forgetting to flip a switch everytime you turn your car.
this is the way i would do it
If I recall correctly, the newer dubs don't have the ignition wire behind the stereo. Someone correct me if I'm wrong.
Posted By: uz2bauto
Date Posted: June 22, 2004 at 7:33 PM
i am not a big vw guy but i think they do...i don't think you hook the power ant/rem. wire up to them though..i will look on a harness at work tomorrow and find out
-------------
paint and body
"semi-professional"
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