Subwoofer integration harness 2010-2016 Equinox/Terrain - TerrainForum.net: GMC Terrain Forum
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post #1 of 27 (permalink) Old 03-24-2018, 01:04 AM Thread Starter
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Subwoofer integration harness 2010-2016 Equinox/Terrain

Now available is my subwoofer amplifier integration harness.This is perfect for adding a subwoofer amp and sub to a stock stereo system.Does not require a line output converter,cutting/splicing of factory wire nor removal of stock head unit.Simply plug this adapter harness between the stock amplifier and amplifier plug.Provides 2 channels of line level signal.If you'd like 4 channels of line level signal I could add them without a problem.

Cost is $25 includes shipping
Email me at [email protected]
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Last edited by JH1973; 03-24-2018 at 01:04 PM.
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post #2 of 27 (permalink) Old 03-24-2018, 12:37 PM Thread Starter
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Here's a demo/explanation video for this particular harness
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post #3 of 27 (permalink) Old 04-03-2018, 02:46 PM Thread Starter
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Price on these kits is now $32(includes shipping)
Also,these kits will work in 2010-2017 models.
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post #4 of 27 (permalink) Old 04-13-2018, 01:50 AM
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Works perfectly on my 2017 Terrain SLE2 with Pioneer 8 speaker ANC setup. Added an amp with a dual sub box and don't seem to have any issues with the ANC and added subwoofers using this. Do get a thump when I turn off my vehicle, but that's an issue with my amp shutting off later than the head unit.
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post #5 of 27 (permalink) Old 04-13-2018, 10:38 AM Thread Starter
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Works perfectly on my 2017 Terrain SLE2 with Pioneer 8 speaker ANC setup. Added an amp with a dual sub box and don't seem to have any issues with the ANC and added subwoofers using this. Do get a thump when I turn off my vehicle, but that's an issue with my amp shutting off later than the head unit.
How did you run the switched 12v wire?
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post #6 of 27 (permalink) Old 04-13-2018, 04:16 PM
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How did you run the switched 12v wire?
Add a fuse in my interior fuse box, tried a few different switched slots and keep getting the pop.
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post #7 of 27 (permalink) Old 04-13-2018, 04:20 PM Thread Starter
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How did you run the switched 12v wire?
Add a fuse in my interior fuse box, tried a few different switched slots and keep getting the pop.
Try using the black wire in the new harness.A recent customer told me he had zero popping issues using it.Just attach some extra wire to like a Bobby pin or paperclip and stick it in the back of the connector.If it works out good then you can splice into the center of the wire.

Last edited by JH1973; 04-13-2018 at 04:26 PM.
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post #8 of 27 (permalink) Old 04-14-2018, 12:00 AM
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Try using the black wire in the new harness.A recent customer told me he had zero popping issues using it.Just attach some extra wire to like a Bobby pin or paperclip and stick it in the back of the connector.If it works out good then you can splice into the center of the wire.
Still a slight pop on shutdown.
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post #9 of 27 (permalink) Old 04-14-2018, 12:22 AM Thread Starter
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Find it hard to believe you have a pop when it's hooked to a switched 12v source in the fuse box.That amp should shut off immediately in that case.Here's a page that can probably help......http://caraudioadvice.com/how-to-fix...-turn-off-pop/
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post #10 of 27 (permalink) Old 04-14-2018, 02:24 AM
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Find it hard to believe you have a pop when it's hooked to a switched 12v source in the fuse box.That amp should shut off immediately in that case.Here's a page that can probably help......http://caraudioadvice.com/how-to-fix...-turn-off-pop/
I've tapped into interior fuses -

22 Sensing and Diagnostic Module Ignition

18 Instrument Panel Cluster Ignition

26/21/28 Spare

17 Auxiliary Power Rear

Black wire on your harness

Once I pull the key and open the door it'll pop after about 2/3 seconds, hard to tell if it's the subs or all my speakers, but it never has happened before so I "assume" it's the subwoofers popping. I've Googled a bit and have read some amps don't have a soft shut down and will pop no matter what, I'm using a Pioneer GM D-9601 partnered with Sound Ordnance B24 box/subs per Crutchfields compatibility check. No other interference (hissing/buzzing etc) just a small thump or pop once I open my door.

Best I've gathered is that the amp is still staying on to long somehow and I get a little backfeed, or I have a bad ground. I'm using an unpainted factory ground in the trunk area, so I'm certain enough it's not that. Trigger wire is 14 gauge and run from the passenger fuse box, under the steering column, up the pillar, behind the curtain airbags, down the rear driver side interior panel, and into my amp. RCAs are from your harness under the wheel, up the pillar with my trigger wire, pulled over into the headliner and run beside the sunroof (with the rear window washer fluid hose), run down the rear driver side panel again, and hooked to my amp. Power wire is along my lower trim panels on the driver side, bass control knob wire runs along my lower trim on passenger side. Sub wires are 8 gauge plugged in with banana plugs to the sub box.

If any of that helps, I'm comfortable that everything is run properly and spaced enough to avoid interference. But I went to a career school for carpentry and college for criminal justice, so I'm very likely missing something blatantly obvious. Interior is back together, only took a few pictures, tried to explain best I could.

If this link doesn't work let me know I'm not overly familiar with posting videos, not sure how well my phone picked up the sound either. On my phone I can't hear the bass any or the pop, on my desktop system that has a subwoofer I can hear it clearly.

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