Aftermarket Headunit Installation Adapter fits 2016-2019 Subaru

In this review of the Aftermarket Headunit Installation Adapter for 2016-2019 Subaru models, the bottom line is simple: it is a focused solution for owners who want to install an aftermarket headunit while keeping the factory reverse camera and many stock features intact. Experienced DIYers and professional installers will appreciate that this harness is effectively plug-and-play, saves time compared with splicing, and specifically supports both nav and non-nav models for camera retention. It is not intended to work with vehicles using the Harman Kardon amplifier, so check your audio system before purchase.

Key Features

• Backup camera retention: Keeps the factory reverse camera functional with an aftermarket headunit on supported Subaru models, maintaining camera use for navigation and reverse view.
• Wide model fit: Designed for 2016-2018 Subaru WRX, Crosstrek, Impreza, Legacy, and BRZ and also fits 2015 Impreza/Crosstrek, avoiding the need for vehicle-specific wiring changes.
• Maestro SW compatible: Includes a prewired connector for a Maestro SW module so you can configure and plug in without rewiring the harness itself.
• 6V converter included: Supplies the necessary voltage conversion for camera signaling so the stock camera interfaces correctly with most aftermarket radios.
• Plug-and-play wiring: Long wire lengths and factory-style connectors reduce splicing and installation time, which reviewers highlighted as a practical labor saver.

Who It's For

This adapter is best for Subaru owners who want to upgrade to an aftermarket headunit but keep the stock reverse camera and many factory features intact. It fits a range of 2015-2019 models and is ideal for DIY installers and shops that prefer a harness with prewired connectors and a 6V converter.

It is not suitable for vehicles that use the Harman Kardon amplifier, since the adapter will not retain that amplifier. Buyers who need full amplifier integration or features not mentioned here should look for a vehicle-specific solution that lists amplifier support.

Pros & Cons

Pros

• Retains the factory backup camera for both nav and non-nav models, preserving OEM camera functionality.
• Prewired Maestro SW connector makes adding a control module straightforward for additional features.
• Includes a 6V converter and typically long wire lengths, which reviewers said reduced the need for splicing.

Cons

• Does not retain Harman Kardon amplifiers, so owners with that system will lose amplifier integration.
• Not a universal harness; intended specifically for listed Subaru models and model years.

Specifications

Compatible Models	2016-2018 WRX, Crosstrek, Impreza, Legacy, BRZ; fits 2015 Impreza/Crosstrek
Feature Retention	Retains factory backup camera and many stock features
Harman Kardon Support	Will not retain Harman Kardon amplifier
Maestro SW	Connector prewired for Maestro SW module
Included Converter	6V converter included
Installation	Plug-and-play harness with factory-style connectors

Our Verdict

The adapter is a practical, well-targeted choice for Subaru owners who want to keep their factory backup camera and simplify aftermarket headunit installation. It offers solid value through a prewired Maestro connector and included 6V converter, and it reduces installation time compared with splicing. Owners with Harman Kardon systems should seek an alternative that supports their amplifier, but for most compatible models this harness is worth buying.

Frequently Asked Questions

Will this retain my factory backup camera?
Yes, the harness is designed to retain the factory reverse camera for both nav and non-nav models on supported Subaru years.

Does it work with Harman Kardon audio systems?
No, this adapter will not retain the Harman Kardon amplifier and is not intended to integrate that amplifier.

Is a Maestro SW supported?
Yes, the connector for a Maestro SW is prewired; configure the Maestro SW and plug it in.