Axxess XSVI-2004 Wiring Interface

Install new car stereo and retain accessory power in select 1997-2004 Chevrolet Corvette

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• Provides 12-Volt accessory power (RAP)
• Designed for amplified audio systems
• Retains balance and fade
• Micro-B USB Updatable

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The Metra XSVI-2004 is designed to provide a 12 volt 10 amp switched accessory output along with the rest of the wires needed to install an aftermarket radio. The R.A.P. (Retained Accessory Power) function, where power is supplied to the radio after the ignition is shut off until one of the doors are opened, is retained by the XSVI-2004. The XSVI-2004 will also retain the amplified door woofers through the use of a differential line converter. This helps eliminate turn on/off pops and allows the user to adjust the level of the door woofers.

Product Features:

  • Compatible with select 1997-2004 Chevrolet Corvette
  • 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 balance and fade
  • High level speaker input
  • Micro-B USB updatable
  • Designed for amplified audio systems
  • 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

  • 1997 Chevrolet Corvette
  • 1998 Chevrolet Corvette
  • 1999 Chevrolet Corvette
  • 2000 Chevrolet Corvette
  • 2001 Chevrolet Corvette
  • 2002 Chevrolet Corvette
  • 2003 Chevrolet Corvette
  • 2004 Chevrolet Corvette

Specifications & Details

Harness Features
Main Harness Function
Install a Car Stereo & Retain the Factory OEM Amplifier
Premium Harness Features
Factory System Amplification
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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Worked Great

This is the only product that works on the Chevrolet Corvette. After having to spend hours rewiring previous cars I decided to buy this Axxess piece. What a great product. Cut my install time by hours and it worked perfectly.

By Mike on August 27, 2012


found this helpful.

Great Product - Poor documentation

This is a great product and works very well. Basically plug-and-play for the Corvette. The installation instructions were minimal at best. The install ended up being easy, but I had to get additional information from on-line audio forums and Axxess customer service to figure where each wire matched to the new H/U.

By j on October 6, 2010


found this helpful.

Easy to use, works well

Replaced a Soundgate adapter with this when the Soundgate died after about 5 years. The bass from the Bose woofers seems to be improved, and the "Retained Accessory Power" feature (which the Soundgate didn't have) is nice.

By B on February 14, 2010


found this helpful.


works great easy to install. Wasn't sure what I was getting into as far as installation but it was just as simple as plugging it into the aftermarket harness

By 2yea on August 28, 2013


found this helpful.

Good Product

I installed this product in my 2004 Corvette and works great.

By LW on April 1, 2010


found this helpful.

the converter worked perfect

The Axxess XSVI-2004 worked perfectly in my 2004 corvette changed the stock stereo to an alpine and the converter worked perfectly with the bose system. The local stereo company tried to talk me in to changing my hole system over (1,000.00 )saying that there would be popping and static using the converter. THERE WASNT - IT WORKED PERFECT worked better than the stock stereo

By mark on November 10, 2009


found this helpful.

XSVI-2004 - fixes anti-theft issue

Fixes anti-theft issue that disables the car!! Install took 45min 1 1/2 hr, overall easy to install after taking the bottom half of the steering components.

By Wes on November 11, 2009


found this helpful.

2002 Corvette

This product works great. I was able to connect a Kenwood system and still use the original speakers and subwoofer.

By Ljoemo on May 7, 2012


found this helpful.


This was required to connect the Jensen 9414 radio to my Bose sound system. Easy to connect and works flawlessly.

By lester on July 12, 2011


found this helpful.

Almost Perfect

Only a few small items. The antenna does not work properly with this unit as I assume the antenna is controlled by the data bus. With the Axxess, the antenna is up all the time the radio is on, even when you are listening to the CD which in the factory configuration, the antenna would be down. Also the for potentiometers are not easy to adjust unless you have the special tool made for that purpose. Small knobs would be better.

By Gene on June 13, 2012


found this helpful.

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• Retains RSE (rear seat entertainment)


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  • Owner’s manual
  • Vehicle’s insurance card
  • 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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