GROM MBUSDA1 MP3 Smartphone Auxiliary Adapter Kit - Honda Acura Aux

In this review of the GROM MBUSDA1 MP3 Smartphone Auxiliary Adapter Kit the bottom line is simple: if you own a compatible Honda or Acura stereo with a CD changer port and want a clean, reversible way to add an AUX input, this adapter delivers. Installation is plug-and-play to the stereo extension port with no splicing, and it preserves the in-dash CD changer while disabling any external changer. The reviewer found it to be a straightforward, low-risk retrofit that brings smartphone and MP3 player audio into older vehicles without altering factory wiring.

Key Features

• Plug-and-play operation: Connects directly to the factory extension port so installation is fast and does not require cutting or splicing factory wiring.
• AUX input converter: Provides a standard 3.5mm input so any MP3 player or smartphone can be routed through the factory stereo for familiar controls and sound routing.
• Vehicle-specific harness: Includes the correct harness for compatible Honda and Acura models, reducing fitment guesswork during installation.
• Preserves in-dash CD changer: The in-dash CD changer remains functional after installation while an external CD changer is disconnected, keeping most stock functionality intact.
• Compact enclosure: The adapter comes in a small plastic enclosure with a 3.5mm cable, making it easy to tuck away behind the dash or glove box for a clean install.

Who It's For

This adapter is aimed at owners of 1991-2005 Honda and Acura vehicles whose factory stereo is CD changer capable and who want a simple, reversible way to add an AUX input for smartphones or portable music players. It is ideal for DIYers who prefer not to modify factory wiring and for cars that should retain the in-dash CD changer.

Those who should look elsewhere include owners of vehicles not listed among the compatible models, or anyone whose stereo is not CD changer capable. Also, if you need Bluetooth, streaming or hands-free calling, a dedicated Bluetooth module or different upgrade would be more appropriate than a wired AUX converter.

Pros & Cons

Pros

• Clean installation without splicing preserves factory wiring and can be reversed if needed.
• Works with any device that outputs via a standard 3.5mm jack, making it broadly compatible with MP3 players and older smartphones.
• Includes vehicle-specific harness and user manual, simplifying the setup for supported models.
• Maintains in-dash CD changer functionality for most installations, so stock features are not lost.

Cons

• Requires a CD changer capable stereo and only fits the specified Honda and Acura model years, limiting compatibility.
• Does not add wireless streaming or phone call features, only a wired AUX input.

Specifications

Product	MP3 Smartphone Auxiliary Adapter Kit
Model	MBUSDA1
Connector	3.5mm cable connector
Installation	Plugs to extension port; plug-and-play, no splicing
Compatibility	Select Honda and Acura vehicles 1991-2005 (CD changer capable)
Package includes	Adapter in plastic enclosure, vehicle specific harness, user manual

Our Verdict

The GROM MBUSDA1 is a sensible, cost-effective way to add a wired AUX input to compatible older Honda and Acura stereos without cutting factory wires. It is best for drivers who want a simple wired connection for music playback and who have CD changer capable factory head units; it is not a substitute for Bluetooth or hands-free upgrades, but it offers dependable value for its intended purpose.

Frequently Asked Questions

Will this work with my Honda or Acura?
It works only with the listed Honda and Acura models from 1991-2005 that have CD changer capable stereos; check your stereo for a compatible extension port before buying.

Does installation require cutting factory wiring?
No, the adapter is plug-and-play and connects to the stereo extension port without splicing into factory wiring.

Will the CD changer still work?
The in-dash CD changer remains functional after installation, but any external CD changer will be disconnected.