The Best Interfaces & Converters 2026

1. AXXESS - 2-Ch. Line Output Converter for Harley Davidson 2014-2017 Vehicles - Multi

Compatible with 2014-2015 Honda Civic models; retains the HDMI port; 7" length

Don't sacrifice sound for a ride on your hog with this Metra mini 2-channel line output converter. The convenient wiring setup is made for us with Harley-Davidsons from 2014 to 2017, offering cool 80W audio enjoyment. This Metra mini 2-channel line output converter comes with everything needed for a seamless setup.

2. AXXESS - 2-Channel Line Output Converter - Black

Compatible with 2014-2015 Honda Civic models; retains the HDMI port; 7" length

This AXXESS AX-MLOC725 2-channel line output converter features adjustable gain for each channel for custom control. The 150W power handling capability ensures wide compatibility.

3. AXXESS - 12-Volt to 6-Volt Step-Down Interface - Multi

12 Volt to 6 Volt Step Down Converter This step down adapter converts your vehicles 12 volts down to 6 volts allowing you to retain your factory 6 volt compatible backup camera when installing a new car stereo. Converts 12-Volts DC to 6-Volts DC Provides Proper Voltage for a 6-Volt Factory Backup Camera 1 amp maximum current output Perfect for back up camera system and other low current draw devices - Number of Pieces: 1 - Item Depth: 0.5 - Item Height: 3.1 - Item Weight: 0.03 - Item Width: 5.9 - Set Y/N: No - Outdoor (Y/N): No

Convert 12-volt DC to 6-volt DC easily with this AXXESS AXCSD-6V step-down converter to provide proper voltage for a 6-volt backup camera.

4. AXXESS - Chime Retention Interface for Select Vehicles - Black

Have your portable GPS radar detector installed the easy way: neatly, reliably and professionally by a Geek Squad Autotech.

This Metra LC-GMRC-CL interface retains your vehicle's warning chimes after the amplified or non-amplified sound system has been removed or replaced. The compact design allows easy integration into your vehicle.

5. Metra - Ram 1500/2500/3500 Data Interface 2013-2017 - Black

Compatible with 2004-2005 Saturn vehicles; connects an aftermarket radio to a vehicle's harness

Ensure the electronic functions of your Ram vehicle are compatible with your aftermarket stereo with this Metra Electronics data interface. It fits 2013 and later cars, providing hassle-free connectivity.

6. AXXESS Data Interface Adapter for 2012-2016 Hyundai and Kia Vehicles - Multi

Compatible with 2014-2015 Honda Civic models; retains the HDMI port; 7" length

Tune your car connection with this Metra AXXESS data interface. The NAV outputs offer multiple vehicle motion functions, such as reverse and speed sense, while the built-in audio controls enable hassle-free access. This Metra AXXESS data interface maintains the factory backup camera during setup for seamless installation in your 2012-2016 Hyundai vehicle.

7. AXXESS - Audio Interface Adapter for Select 2012 and Later Hyundai and Kia Vehicles - Black

Over 7,500 loops; new instruments and effects; live performance; remastered interface; MIDI scoring and editing; video editing; mixing and mastering; enhanced automation

Retain the use of an amplifier in your 2012 or newer Hyundai/Kia vehicle with this Axxess interface. It works with AX-HYKIA1-SWC or AX-HYKIA2-SWC for improved audio output.

8. Metra - Axxess Steering Wheel Control and Data Interface for Select 2001-2018 Mercedes Vehicles - Multi

One Solution Provides Total Control Axxess has engineered a new data interface that combines all of the features of the patented ASWC-1 with additional patent-pending features into one robust solution for new radio installations. When replacing a radio, the AXTC-1 utilizes patented Auto-Detect technology (1) that automatically detects the vehicle type, radio connection and preset controls, while allowing the ability to dual assign steering wheel controls. It provides NAV outputs, accessory power and a 12-volt illumination output, in addition to retaining R.A.P., balance and fade. Compatible with More Radios and Vehicles. The Axxess Total Control Series is a universal solution designed to work with all major radio brands and both amplified and non-amplified audio systems. In addition to Auto-Detect, it can be manually programmed for most vehicles and will retain settings even after battery disconnection or interface removal. Additional vehicle-specific packages include harnessing for an easier installation.

Tune your car connection with this AXXESS steering wheel control and data interface. The auto-detect function works with all major radio brands, while the nonvolatile memory retains settings even if battery is disconnected or interface is removed from the vehicle. This AXXESS steering wheel control and data interface fits select 2001-2018 Mercedes vehicles for seamless operation.

9. Metra - Axxess Steering Wheel Control Interface for Select 1999-2009 Toyota and Lexus Vehicles - Multi

Toyota Sienna 1999-2001 SWC Interface This interface retains the OEM steering wheel controls when replacing the OEM radio with an aftermarket radio. No additional interfaces needed. Automatically programs the buttons on the steering wheel and auto detects what radio it is connected to. Works with all major radio brands. All connections are made behind the radio. One Interface Does it All No Additional Interfaces Needed Retains settings even if battery is disconnected or interface is removed Auto detects what radio it is connected to Micro B USB updatable - Number of Pieces: 1 - Item Depth: 2.7 - Item Height: 3 - Item Weight: 0.25 - Item Width: 4.3 - Set Y/N: No - Outdoor (Y/N): No

Tune your car connection with this AXXESS steering wheel control interface. The auto-detect function works with all major radio brands, while the nonvolatile memory retains settings even if battery is disconnected or interface is removed from the vehicle. This AXXESS data interface fits select 1999-2009 Toyota and Lexus vehicles for seamless operation.

10. Metra - Axxess Camera Retention Interface for Select 2011-2016 Chrysler Vehicles - Multi

Compatible with Chrysler®. This product is not created or sold by Chrysler®.; Retains the factory back-up camera to an aftermarket radio.;

Compatible with select 2011-2016 Chrysler models, this AXXESS camera retention harness allows adding the factory camera to an aftermarket radio.