Axxess GMOS-06 Wiring Interface

Install a new car stereo and retain the safety warning chimes in 1996-2005 Cadillac DeVille, Seville, Eldorado

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• Provides 12-Volt accessory power (RAP)
• For use in Bose amplified systems
• Retains balance and fade
• Micro-B USB Updatable
• Pre-Wired for ASWC-1 (Sold separately)

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Product Features:

  • Compatible with 1996-2005 Cadillac DeVille, Seville, Eldorado
  • Designed to install a new aftermarket car stereo
  • Provides accessory power (12-volt 10-amp)
  • Retains R.A.P. (retained accessory power)
  • Provides NAV outputs (parking brake, reverse, and V.S.S)
  • Retains all safety and warning chimes
  • Adjustable chime level
  • High level speaker input
  • Retains OnStar / OE Bluetooth
  • Adjustable OnStar level
  • Micro-B USB updatable
  • For use in Bose amplified systems
  • Retains balance and fade
  • USB-CAB (sold separately) updatable
  • Pre-Wired for Axxess ASWC-1 steering wheel audio control adapter (Sold separately)
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Compatible Vehicles

Please use our Fitment Guide to determine specific compatibility for the submodel and audio features

  • 1996 Cadillac DeVille
  • 1996 Cadillac Seville
  • 1997 Cadillac DeVille
  • 1997 Cadillac Seville
  • 1998 Cadillac DeVille
  • 1998 Cadillac Seville
  • 1999 Cadillac DeVille
  • 1999 Cadillac Eldorado
  • 1999 Cadillac Seville
  • 2000 Cadillac DeVille
  • 2000 Cadillac Eldorado
  • 2000 Cadillac Seville
  • 2001 Cadillac DeVille
  • 2001 Cadillac Eldorado
  • 2001 Cadillac Seville
  • 2002 Cadillac DeVille
  • 2002 Cadillac Eldorado
  • 2002 Cadillac Seville
  • 2003 Cadillac DeVille
  • 2003 Cadillac Seville
  • 2004 Cadillac DeVille
  • 2004 Cadillac Seville
  • 2005 Cadillac DeVille

Specifications & Details

Harness Features
Main Harness Function
Connect/Install an Aftermarket Car Stereo
Additional Harness Features
Chime Retention
OnStar Retention
Provides Parking Brake & Reverse Signals
Provides Vehicle Speed Sense
Premium Harness Features
On-Star Compatible
Chime Retention
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Item Details


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Customer Ratings & Reviews

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Customer Reviews

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great value

Great product that I bought need it for aftermarket car radio installation and it works perfect at a great price

By rad on August 20, 2014


found this helpful.

Good Deal!!!!

Fast delivery, product works fine for my car. No problems. Will do business again

By Jay on September 17, 2010


found this helpful.

Works like a charm

It works as advertised. Being able to keep the factory amps and chimes is a plus. All I did was matched the wires up to the radio and worked like a charm. You can also adjust the output so that the radio signal matches the Bose amp. The only issue I have was the unit itself is kinda bulky and had to squeeze everything into a tight place in my Cadillac Deville. If you are like me and wanting to get rid of the factory radio this is your best solution.

By Jerry on January 20, 2014


found this helpful.

good product. could use a little work though.

Great product, little bulky. If the car sits more than two days I have to reset my stereo settings. The main purpose of buying this product was to bypassing the built in car security from the stock radio by closing loop with harness.

By daniel on August 15, 2011


found this helpful.

Great product!

If you are have a few bucks on spending money. Definitely buy this. The only issue I experienced was the onstar turns on randomly like 1ce a day? 2ce...

By Cristian on September 2, 2016 Checkmark Icon Verified purchase


found this helpful.

Excellent value!

Bought this for my 1998 Deville. I had problems at first with it resetting all my setting. After that i simply ran the battery line straight to the battery with a fuse on it and never had a problem again. It works fantastic.

By Lorne Grandison on December 17, 2014


found this helpful.

Wire harness

Great product and Prices hard to find always available here love y'all!!!

By Roderick on August 4, 2020


found this helpful.

Interface for aftermarket radio

This interface was recommended by the installer. Works as advertised.

By topsider on June 25, 2016


found this helpful.

Have to have for 00-05 devilles

This product is a requirement when putting an aftermarket stereo in your 00-05 deville. Do NOT try and straight wire the stereo it will mess alot of things up in your Cadillac. This product worked like a charm and super easy to self install.

By Ronnie P on March 20, 2016


found this helpful.

By Anonymous Shopper on March 9, 2023 Checkmark Icon Verified purchase


found this helpful.

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  • Owner’s manual
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  • Vehicle registration
  • Vehicle produced after 2005: Inside driver’s side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
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