www.LLJCustoms.com
20142018 Gm Sierra/Silverado Amplifier installation using our Plug and play Loop Back harness teamed up with 2 Audio control amps LC4.800 and an LC1.800 along with an Epicenter to help boost that deep bass.
Elite Loopback Harness:
https://lljcustoms.com/products/2014...
Ready2Go Tharness:
https://tharness.com/products/20132...
Contact us:
Email: [email protected]
Text: 6023207004
Https://LLJCustoms.com