• Metra 70-1857 Tuner Bypass Bose Amp Harness for Cadillac Chevrolet 1987-1996
  • Metra 70-1857 Tuner Bypass Bose Amp Harness for Cadillac Chevrolet 1987-1996 - product image 2
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Metra

Metra 70-1857 Tuner Bypass Bose Amp Harness for Cadillac Chevrolet 1987-1996

Metra 70-1857 Tuner Bypass Bose Amp Harness for Cadillac Chevrolet 1987-1996

$89.99 USD
$89.99 USD
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Review the application and system requirements

Confirm the size, power, connections, and included or separately required parts described on this page.

Metra 70-1857 is a tuner bypass and Bose amplifier integration harness for select amplified Cadillac and Chevrolet vehicles from 1987-1996. It eliminates the factory tuner brain and interfaces with the Bose amplifier so an aftermarket radio can be installed.

At a Glance

  • Tuner bypass and Bose amplifier integration harness
  • Designed for select amplified Cadillac and Chevrolet models
  • Eliminates the factory tuner brain in compatible applications
  • Interfaces into the Bose amplifier for aftermarket radio installation
  • 204-inch harness length supports routing to the tuner/amplifier location

System / Wiring Notes

  • Designed for select amplified models only
  • Factory Bose amplifier integration depends on compatible vehicle equipment
  • Verify factory tuner location and amplifier system before installation

Exact Vehicle Compatibility

Find your vehicle below, then match the model year and factory-equipment details in the same row. Factory radio, amplifier, navigation, trim, speaker location, and connector differences can change which installation parts are required. If anything differs, contact MCOR before ordering.

Make Model Years Factory Equipment / Qualifier
Cadillac Brougham 1990-1992 Factory amplified audio system
Cadillac DeVille 1994-1995 Factory amplified audio system
Cadillac DeVille Concours 1994-1995 Factory amplified audio system
Cadillac Eldorado 1992-1993 column shift; Factory amplified audio system
Cadillac Eldorado 1992-1993 console shift; Factory amplified audio system
Cadillac Eldorado 1994-1995 Factory amplified audio system
Cadillac Fleetwood 1993-1995 Factory amplified audio system
Cadillac Fleetwood Brougham 1990-1992 Factory amplified audio system
Cadillac Seville 1992-1993 column shift; Factory amplified audio system
Cadillac Seville 1992-1993 console shift; Factory amplified audio system
Cadillac Seville 1994-1995 column shift; Factory amplified audio system
Cadillac Seville 1994-1995 console shift; Factory amplified audio system
Chevrolet Corvette 1990-1993 Factory amplified audio system
Chevrolet Corvette 1994-1996 Factory amplified audio system

Fitment note: Year and model alone are not always enough to confirm compatibility. Match every factory-equipment qualifier shown for your vehicle, and contact MCOR Automotive if the radio, amplifier, navigation, speaker, camera, trim, or connector details are uncertain.

Installation Notes

  • Confirm exact vehicle fitment, factory audio system, and radio connector before installation
  • Additional parts such as a dash kit, antenna adapter, steering wheel control interface, or data interface may be required for a complete installation
  • Professional installation is recommended for best results
  • Check current manufacturer instructions and vehicle application data before installation

What’s in the Box

  • Metra 70-1857 tuner bypass/Bose amplifier integration harness

Technical Specifications

  • Brand: Metra
  • Model: 70-1857
  • Product Type: Tuner bypass harness
  • Application: Select Cadillac and Chevrolet amplified aftermarket radio installations requiring tuner bypass and Bose amplifier integration
  • Compatibility Type: Vehicle-specific
  • Factory Feature: Tuner bypass and Bose amplifier integration
  • Harness Length: 204 inches
  • Audio System: Select amplified models

Identifiers & Packaging

  • MPN: 70-1857
  • UPC: 086429087174
  • Sold As: Each
  • Included Components: Tuner bypass and Bose amplifier integration harness

Why Buy From MCOR Automotive

  • Authorized retailer for the brands we sell
  • Specialists in vehicle audio integration, radio replacement parts, and installation accessories
  • 22+ years of professional automotive electronics experience
  • Expert support for compatibility verification and proper setup
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