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GM Wiring Harness

- Axxess GMOS-MOST-01 MOST-Bus Interface for 2014 - and Up GM Vehicles$299.99Out of stock
- Easily remove the factory stereo and replace it with an aftermarket stereo and retain all of the factory functions
- Retains R.A.P. (retained accessory power)
- Retains OnStar system
- Retains OEM Bluetooth system
- Used in M.O.S.T. amplified audio systems
- Retains factory back up camera
- Retains chimes
- Retains factory 3.5mm auxiliary input
- Provides NAV outputs (parking brake, reverse, mute, V.S.S.)
Car Stereo Wiring how to's and guides
What do the wire colors of a car stereo mean?
Car stereo wiring is color coded for convenience and simplicity. Each wire color has a specific meaning, we show you what they are.
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How to install a car stereo
Watch our video and read our blog for step-by-step instructions documenting the installation of a aftermarket car stereo receiver.
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Car Stereo Wiring Guide
Watch our video and read our blog for the proper wiring colors and their definitions. We explain wire-by-wire what these connections do for the installation of an aftermarket car stereo receiver.
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