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Unread 08-26-2013, 06:04 PM   #1
bcanavari18
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Stock sub woofer with Alpine Stereo

When I hooked up my new stereo the sub woofer did not work. I matched all of the wires but didn't see one for the sub woofer. How can I make it work?

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Unread 08-26-2013, 06:12 PM   #2
frenchy206
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What wiring harness adapter did you use?
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Unread 08-26-2013, 06:23 PM   #3
bcanavari18
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Metra 70-1817 Turbo Wire
http://www.metraonline.com/part/70-1817
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Unread 08-26-2013, 07:54 PM   #4
Neil F.
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You need to have the blue wire connected. Its the trigger for the power to the sub.
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Unread 08-27-2013, 02:11 AM   #5
MetalMountainGoat
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Yep the blue amp turn on wire has to be connected. Make sure it is the sold blue one though because the blue and white stripe wire is the power antenna and if you hook it to that, then the sub will only work when the AM/FM radio is playing.
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Unread 06-23-2015, 06:57 PM   #6
1 Long CJ
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I'm using the Crutchfield 7 speaker harness and the subwoofer is not working. Solid blue connected to what? There's no wire to connect it to coming from the stereo. Can it be spliced together with the incoming Acc. power or is it looking for a PCI bus signal?


I do see in the schematics there is supposed to be a 12v source coming from the radio (pin 13) going to the subwoofer. My harness also has a blue wire at pin 13. I guess it won't matter that the sub is powered on whenever the key is on, even if the radio is off.
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Unread 06-23-2015, 10:14 PM   #7
geroux
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Quote:
Originally Posted by 1 Long CJ View Post
I'm using the Crutchfield 7 speaker harness and the subwoofer is not working. Solid blue connected to what? There's no wire to connect it to coming from the stereo. Can it be spliced together with the incoming Acc. power or is it looking for a PCI bus signal?


I do see in the schematics there is supposed to be a 12v source coming from the radio (pin 13) going to the subwoofer. My harness also has a blue wire at pin 13. I guess it won't matter that the sub is powered on whenever the key is on, even if the radio is off.
The Crutchfield adaptor screwed me too nine years ago. I wrote them and told them they need to consider the seven speaker system with sub but I guess they ignored me. As said before in this old thread, your head unit should have a blue wire that has power when the head unit is on. Connect that to the power wire to the sub "amp" wire. If I recall it can be done through the Crutchfield adapter but it just wasn't identified as a required splice in the instructions.
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Unread 06-24-2015, 04:55 AM   #8
LJ Dave
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The wire on the adapter harness is probably labeled "power antenna". At least mine was.
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Unread 06-29-2015, 07:24 AM   #9
1 Long CJ
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Correct. No amp wire coming from stereo harness. Wasn't sure if pwr.antenna wire (blue w/white) stays hot when using other inputs besides tuner. I used the Acc.power wire to feed back to the sub.
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Unread 06-29-2015, 09:54 AM   #10
LJ Dave
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Quote:
Originally Posted by 1 Long CJ View Post
Correct. No amp wire coming from stereo harness. Wasn't sure if pwr.antenna wire (blue w/white) stays hot when using other inputs besides tuner. I used the Acc.power wire to feed back to the sub.
Oops that probably is what I used also. It was a solid blue wire. Didn't look like I needed to hook it up at first, then I noticed the sub wasn't getting power. An easy fix!
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audio , stereo , sub woofer , wiring

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