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Scosche CGM02 Wiring Interface

Allows you to connect a new car stereo and retain the factory amp in select 1986-up GM vehicles

Item # 142C4GM02

The Scosche CGM02 wiring interface allows you to integrate a high-powered aftermarket receiver into select 1986-up...

Find what Fits your car

The Scosche CGM02 wiring interface allows you to integrate a high-powered aftermarket receiver into select 1986-up...

California customers:
Please click here for your Proposition 65 warning.

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Discontinued item

Item # 142C4GM02

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About the Scosche CGM02 Wiring Interface

The Scosche CGM02 wiring interface allows you to integrate a high-powered aftermarket receiver into select 1986-up General Motors vehicles with premium factory systems. The package includes the OEA-4 adapter and a GM-specific harness. The OEA-4 unit has output-level gain controls for each of its four channels which can be adjusted to properly match the new receiver to the factory amplifier.

The Scosche CGM02 wiring interface allows you to integrate a high-powered aftermarket receiver into select 1986-up General Motors vehicles with premium factory systems. The package includes the OEA-4 adapter and a GM-specific harness. The OEA-4 unit has output-level gain controls for each of its four channels which can be adjusted to properly match the new receiver to the factory amplifier.

Note: If you haven't already, please enter your vehicle information or call a Sales Advisor at 1-888-955-6000 to find out if this adapter is compatible with your vehicle.

Details:
  • 4 speaker-level inputs
  • output level adjustments for all four channels
  • works best with high-powered aftermarket receivers
  • dimensions: 3-15/16"W x 15/16"H x 2-1/16"D
  • 1-year warranty
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What's in the box:

  • OEA-4 OEM Amp interface (with 8-wire input with bare wires/8-wire output with white rectangular connector)
  • Flat-blade screwdriver (attached to interface module)
  • 13 Crimp caps
  • Instruction sheet
MFR #CGM02

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More details on the Scosche CGM02 Wiring Interface

Stacey B.
The Scosche CGM02 Wiring Interface replaces these items:

Product Research

Features

Compatibility: The OEA-4 (model C4GM02) is a non-electronic interface that allows an aftermarket high-power stereo to integrate into select 1986-96 General Motors vehicles with Bose premium factory systems. Please check the Crutchfield Vehicle Selector for compatibility for your vehicle.

Adjustment Gain Controls: Four rotary gain controls (front left, front right, rear left, rear right) are located recessed inside the adapter chassis. There is a small flat-blade screwdriver attached to the adapter's case, and its use is recommended. The controls are very fragile and sensitive, and a slight adjustment will change volume dramatically.

Harnesses: The adapter's input wires are approximately 5-1/2" long with bare ends. These splice to the new receiver's speaker output wires. The adapter's output wires are approximately 11" long and terminate into a white rectangular Molex plug. There are 5 additional wires coming from the white plug that should be spliced to the receiver's wiring harness. The Molex plug end is molded to match with the factory wiring harness. Crimp caps are provided for wire splices.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Came as part of package [ Bud  Jul 24, 2018 ]
A
was included in installation kit [ Douglas  Apr 07, 2018 ]
A
I have the factory 5 speaker bose system in my 95 camaro z28. No longer am getting sound to speakers so its time to swap the HU out for my aftermarket single din. Hopefully this harness adapter will allow me to use the factory speakers with the aftermarket HU which im sure it will. If it works, thats a great deal only needing to buy a simple plug in play harness for it. Bose is crap, scosche is where its at! [ jordan  Aug 31, 2017 ]
A
I got a camaro with a bose system, and who ever had it before me put in an aftermarket cd player and it sounds like crap, and after research this seems the best bet to get from aftermarket to bose system [ Michael  Jul 31, 2017 ]
A
direct fit and easy to adjust [ Scott  Jun 26, 2016 ]
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