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  • Custom Made T-Harness for BOSE - Compatible with 2019-2026 GMC Sierra - Chevrolet Silverado Vehicles
Custom Made T-Harness for BOSE - Compatible with 2019-2026 GMC Sierra - Chevrolet Silverado Vehicles
Custom Made T-Harness for BOSE - Compatible with 2019-2026 GMC Sierra - Chevrolet Silverado Vehicles
Custom Made T-Harness for BOSE - Compatible with 2019-2026 GMC Sierra - Chevrolet Silverado Vehicles
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Custom Made T-Harness for BOSE - Compatible with 2019-2026 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 $88.00 to $185.00




GMCTHarness-Wire

Customer Reviews

Based on 66 reviews
89%
(59)
5%
(3)
2%
(1)
0%
(0)
5%
(3)
90.5
100.0
B
Brian M (New York, NY, US)
T Harness/ RCA ‘19 GMC Sierra w/ Bose

A must have if you’re wanting to add and amp to the Bose system. Makes install so much easier no taping into speaker wire. Sounds Good Stereo were very knowledgeable and shipping was fast and easy ABSOLUTELY would use them again for my next build. 💯 recommend!

G
George Lowe (Little River, SC, US)
Quality Products and Support

Purchased aftermarket electronics from a different company after running into it many obstacles I happen to find sounds good stereo on the web and the product I was looking for to connect my factory stereo to the aftermarket products. I still had many questions and the sounds good stereo team answered every single one and walked me through step-by-step how to connect and dial in all the settings. Keep in mind I did not get this service from the company that I purchased the majority aftermarket stereo parts. Sounds good stereo will be my go to in the future. Thank you for having knowledgeable, supportive, and patient team members to help customers like me.

I
Ismael (San Antonio, TX, US)
Easy plug and play

This is very easy to install. Plug and play no need to cut wires. Very pleased with the purchase. Definitely recommend!

F
Fudge is for sharing. (Saint John, NB, CA)
Perfect fit

Ordered for my 24 AT4 with Bose. Fit perfectly and works perfectly. Was able to use with the GM kicker setup. Very happy. Brought the bass level up just that little bit to compete the package.

S
Sauao Patiapa Mao
Perfect fit

Easy install, no cuts. Thank you

M
MIKE HAZLETT (Mount Sterling, KY, US)
PLUG AND PLAY WORKED GREAT

THE LOC WAS NOT FOCAL BUT STILL WORKED AND EASY PLUG AND PLAY WITH REMOTE WIRE

F
FishNGambler (Orlando, FL, US)
Exactly what I needed for my 2022.5 gmc sierra with the Bose. Great customer service!!

Exactly what I needed for my 2022.5 gmc sierra with the Bose. Great customer service!!

M
Mike Melancon (Bourg, LA, US)
Chevy 2500 subwoofer upgrade.

The quality and ease of installation with this product was amazing. Don’t fall for cheap imitations this setup was perfect and made adding an additional subwoofer easier than ever expected.

J
Joshua H. (St Louis, MO, US)
2025 Silverado 1500 RST Crew Cab with Bose

Excellent after market Custom T Harness with LOC makes adding Skar amp and Skar ported box with 12 inch subs a breeze to the Bose system. Sounds so much better than only the small stock sub buried inside the center console which had no dedicated amp gain controls. Extremely fast shipping of the harness, received it the next day after it was shipped.

k
kevin dixon (Charlotte, NC, US)
Plug and play

Kit had everything needed to tie into my 2024 Denali 3500. Was really easy and even have the remote wire.

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Product Description

Custom-made T-harness for adding an aftermarket subwoofer amplifier to Bose-equipped 2019-2026 GMC Sierra and Chevrolet Silverado trucks. Plugs directly into the factory Bose amplifier — no wire cutting, no signal loss. Choose from speaker wire, RCA, or built-in LOC output based on your amplifier. Hand-built in Nashville, TN.

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Customer Reviews

Customer Reviews

Based on 66 reviews
89%
(59)
5%
(3)
2%
(1)
0%
(0)
5%
(3)
90.5
100.0
B
Brian M (New York, NY, US)
T Harness/ RCA ‘19 GMC Sierra w/ Bose

A must have if you’re wanting to add and amp to the Bose system. Makes install so much easier no taping into speaker wire. Sounds Good Stereo were very knowledgeable and shipping was fast and easy ABSOLUTELY would use them again for my next build. 💯 recommend!

G
George Lowe (Little River, SC, US)
Quality Products and Support

Purchased aftermarket electronics from a different company after running into it many obstacles I happen to find sounds good stereo on the web and the product I was looking for to connect my factory stereo to the aftermarket products. I still had many questions and the sounds good stereo team answered every single one and walked me through step-by-step how to connect and dial in all the settings. Keep in mind I did not get this service from the company that I purchased the majority aftermarket stereo parts. Sounds good stereo will be my go to in the future. Thank you for having knowledgeable, supportive, and patient team members to help customers like me.

I
Ismael (San Antonio, TX, US)
Easy plug and play

This is very easy to install. Plug and play no need to cut wires. Very pleased with the purchase. Definitely recommend!

F
Fudge is for sharing. (Saint John, NB, CA)
Perfect fit

Ordered for my 24 AT4 with Bose. Fit perfectly and works perfectly. Was able to use with the GM kicker setup. Very happy. Brought the bass level up just that little bit to compete the package.

S
Sauao Patiapa Mao
Perfect fit

Easy install, no cuts. Thank you

M
MIKE HAZLETT (Mount Sterling, KY, US)
PLUG AND PLAY WORKED GREAT

THE LOC WAS NOT FOCAL BUT STILL WORKED AND EASY PLUG AND PLAY WITH REMOTE WIRE

F
FishNGambler (Orlando, FL, US)
Exactly what I needed for my 2022.5 gmc sierra with the Bose. Great customer service!!

Exactly what I needed for my 2022.5 gmc sierra with the Bose. Great customer service!!

M
Mike Melancon (Bourg, LA, US)
Chevy 2500 subwoofer upgrade.

The quality and ease of installation with this product was amazing. Don’t fall for cheap imitations this setup was perfect and made adding an additional subwoofer easier than ever expected.

J
Joshua H. (St Louis, MO, US)
2025 Silverado 1500 RST Crew Cab with Bose

Excellent after market Custom T Harness with LOC makes adding Skar amp and Skar ported box with 12 inch subs a breeze to the Bose system. Sounds so much better than only the small stock sub buried inside the center console which had no dedicated amp gain controls. Extremely fast shipping of the harness, received it the next day after it was shipped.

k
kevin dixon (Charlotte, NC, US)
Plug and play

Kit had everything needed to tie into my 2024 Denali 3500. Was really easy and even have the remote wire.

User picture
Load More

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