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  • Custom Made T-Harness for BOSE - Compatible with 2019-2025 GMC Sierra - Chevrolet Silverado Vehicles
Custom Made T-Harness for BOSE - Compatible with 2019-2025 GMC Sierra - Chevrolet Silverado Vehicles
Custom Made T-Harness for BOSE - Compatible with 2019-2025 GMC Sierra - Chevrolet Silverado Vehicles
Custom Made T-Harness for BOSE - Compatible with 2019-2025 GMC Sierra - Chevrolet Silverado Vehicles
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Custom Made T-Harness for BOSE - Compatible with 2019-2025 GMC Sierra - Chevrolet Silverado Vehicles

Key Features:
  • - Hand Crafted in-house by our award winning team
  • - Provides the factory subwoofer signal to feed into a new aftermarket subwoofer amplifier
  • - Connects at the factory BOSE amplifier for a zero splice connection
  • - Made from premium copper wiring along with audiophile grade RCA tips
  • - Available in multiple configurations depending on the amplifier being used (Contact us if unsure)


From $113.00 to $260.00




GMCTHarness-Wire

Customer Reviews

Based on 47 reviews
89%
(42)
4%
(2)
2%
(1)
0%
(0)
4%
(2)
88.6
100.0
B
Bryan (Dallas, TX, US)
NOT FOCAL

I would return this if I didn’t wait a month for its arrival. I opted for the LOC version (because Focal is a trusted brand) in order to simplify any installation. When it arrived it was some unknown brand. Buy the cheaper version and do it yourself.

A
Armand C. (Tampa, FL, US)
Fast and perfect!

Perfect! Just what I needed for my 21 Silverado Trail Boss. Will be upgrading the rest of the audio and SG will be my go to!

J
Joel (Albuquerque, NM, US)
Does the Job

The harness is made of good quality and wrapped in factory like tape. The connectors do not click but do secure into the amp and harness. There is no instruction manual or diagram or what wires are for what so you’ll have to reach out to support. The wires do not matter as there is no left or right channel but the black stripe wire is negative which does matter. Just a small diagram printout included in the package would save a lot of questions and headaches.

User picture
M
Marc Valles (Burleson, TX, US)
Plug and play!!!

So happy I went with this product!!! Hardest thing about installing my system was running the positive wire. Only thing I noticed, you have to really push the harnesses together or you have no audio what so ever. Still very happy with it! No running rca’s to the actual radio. RCA’s it comes with is perfect length

K
Kris Young (Apex, NC, US)
2025 Chevy Silverado RST with Bose

100% Plug and Play installation. Quality made harness, keeps everything factory looking without having to cut or splice into any factory wires. This harness is a must have if you like installations clean like factory

M
MICHAEL SARGENT (Minneapolis, MN, US)
WORKS GREAT IN A 2024 DENALI 3500HD ULTIMATE WITH BOSE.

CONNECTORS ARE A LITTLE PICKY TO PLUG IN BUT WORKS AWESOME AND VERY NICE NOT TO HAVE TO CUT THE WIRING IN THE TRUCK TO ADD AN AMP FOR A SUBWOOFER. I ORDERED WITH THE LOC. I AM RUNNING A JL AUDIO XDM600/1 AND INSTALLED A JL AUDIO STEALTH BOX.

S
Steve G. (Leonardtown, MD, US)
T-Harness for BOSE with FOCAL LOC

This component is plug-n-play, simple to install, and I am impressed by the output signal level and clarity. It is a must have for those who want to retain the factory BOSE amplifier while adding an aftermarket amplifier and subwoofers.

User picture
J
Jonathan Broadway (Midlothian, VA, US)
Works Great

Used this to add an amp and sub to the Bose system in my 2020 Chevy Trail Boss. I wasn't sure what version I needed so I called SGS before purchasing. With a Kicker amp I just needed the RCA end. Installation was easy after getting the top of the back seat removed ( Thanks Chevy ). With the RCA tips you don't even have to run a remote turn on wire to the amp. Hook up your RCA, power and ground, run your speaker wire to the sub and enjoy some much needed low end. Quality harness that takes the guess work out. Super friendly and knowledgeable staff. Highly recommend.

J
Joel Fleming (Springfield, MO, US)
Works perfect

100% plug and play on my 2024 AT4 w/Bose, quality made harness

D
Danny D (Taylor, TX, US)
A must have for Bose Equipped trucks!

This Harness made installing a sub/amp in my truck a breeze! Honestly the hardest part was removing the seat to access the bose amp. Other than that,super simple process! I used a Kicker Key500.1 amp,so didn't have to run a remote wire. Thanks for all the Help,Don!!!!

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Product Description

For the Speaker Wire and RCA options, you will need to see if your amplifier accepts speaker-level/high-level inputs and how. For example, here are several popular amplifiers and if they accept High-Level inputs:

Arc Audio High-Level = RCA
Mosconi High Level = RCA
Kicker = High Level = RCA
New Alpine High Level = RCA
Older Alpine High Level = Speaker Wire
JL Audio High-Level = RCA
Audiocontrol High-Level = Speaker Wire
New Rockford High-Level = RCA
Old Rockford High-Level = Speaker Wire


Skar Audio RP Series High-Level = Does not have it, you cannot use direct RCAs from your factory Bose amplifier. You must convert this with our LOC option.

Sundown Salt Series High-Level = Does not have it, you cannot use direct RCAs from your factory Bose amplifier. You must convert this with our LOC option.

DD Audio M Series High-Level = Does not have it, you cannot use direct RCAs from your factory Bose amplifier. You must convert this with our LOC option.

Rockville = High-Level = Does not have it, you cannot use direct RCAs from your factory Bose amplifier. You must convert this with our LOC option.

etc. Check the manual of your amplifier or call them to find out if your amplifier requires a external LOC. 

Any questions, please let us know and we can guide you in the right direction.

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Customer Reviews

Customer Reviews

Based on 47 reviews
89%
(42)
4%
(2)
2%
(1)
0%
(0)
4%
(2)
88.6
100.0
B
Bryan (Dallas, TX, US)
NOT FOCAL

I would return this if I didn’t wait a month for its arrival. I opted for the LOC version (because Focal is a trusted brand) in order to simplify any installation. When it arrived it was some unknown brand. Buy the cheaper version and do it yourself.

A
Armand C. (Tampa, FL, US)
Fast and perfect!

Perfect! Just what I needed for my 21 Silverado Trail Boss. Will be upgrading the rest of the audio and SG will be my go to!

J
Joel (Albuquerque, NM, US)
Does the Job

The harness is made of good quality and wrapped in factory like tape. The connectors do not click but do secure into the amp and harness. There is no instruction manual or diagram or what wires are for what so you’ll have to reach out to support. The wires do not matter as there is no left or right channel but the black stripe wire is negative which does matter. Just a small diagram printout included in the package would save a lot of questions and headaches.

User picture
M
Marc Valles (Burleson, TX, US)
Plug and play!!!

So happy I went with this product!!! Hardest thing about installing my system was running the positive wire. Only thing I noticed, you have to really push the harnesses together or you have no audio what so ever. Still very happy with it! No running rca’s to the actual radio. RCA’s it comes with is perfect length

K
Kris Young (Apex, NC, US)
2025 Chevy Silverado RST with Bose

100% Plug and Play installation. Quality made harness, keeps everything factory looking without having to cut or splice into any factory wires. This harness is a must have if you like installations clean like factory

M
MICHAEL SARGENT (Minneapolis, MN, US)
WORKS GREAT IN A 2024 DENALI 3500HD ULTIMATE WITH BOSE.

CONNECTORS ARE A LITTLE PICKY TO PLUG IN BUT WORKS AWESOME AND VERY NICE NOT TO HAVE TO CUT THE WIRING IN THE TRUCK TO ADD AN AMP FOR A SUBWOOFER. I ORDERED WITH THE LOC. I AM RUNNING A JL AUDIO XDM600/1 AND INSTALLED A JL AUDIO STEALTH BOX.

S
Steve G. (Leonardtown, MD, US)
T-Harness for BOSE with FOCAL LOC

This component is plug-n-play, simple to install, and I am impressed by the output signal level and clarity. It is a must have for those who want to retain the factory BOSE amplifier while adding an aftermarket amplifier and subwoofers.

User picture
J
Jonathan Broadway (Midlothian, VA, US)
Works Great

Used this to add an amp and sub to the Bose system in my 2020 Chevy Trail Boss. I wasn't sure what version I needed so I called SGS before purchasing. With a Kicker amp I just needed the RCA end. Installation was easy after getting the top of the back seat removed ( Thanks Chevy ). With the RCA tips you don't even have to run a remote turn on wire to the amp. Hook up your RCA, power and ground, run your speaker wire to the sub and enjoy some much needed low end. Quality harness that takes the guess work out. Super friendly and knowledgeable staff. Highly recommend.

J
Joel Fleming (Springfield, MO, US)
Works perfect

100% plug and play on my 2024 AT4 w/Bose, quality made harness

D
Danny D (Taylor, TX, US)
A must have for Bose Equipped trucks!

This Harness made installing a sub/amp in my truck a breeze! Honestly the hardest part was removing the seat to access the bose amp. Other than that,super simple process! I used a Kicker Key500.1 amp,so didn't have to run a remote wire. Thanks for all the Help,Don!!!!

User picture
Load More

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