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Due to the wide variety of early BMW radio head unit versions and amplifier combinations, there is a very slight chance that our Bremmen head units for E46 & E39 vehicles with CANBUS-based radio systems may experience compatibility issues with the amplifier. This can lead to intermittent or consistent issues with no audio being played through the speakers. Luckily this is easily remedied by utilizing this 6-meter Amplifier Adapter Harness!
This Amplifier Adapter Harness connects the head unit directly to the amplifier and/or CD-Changer in the trunk, providing a reliable connection for proper signal communication and audio functionality.
NOTE: This occurrence is very rare as these head units are designed to work seamlessly with two-way interactive CANBUS systems. If you are experiencing issues after installing your new Bremmen Radio Head Unit, please contact ECS Tuning with your VIN so that we can determine the exact OE head unit version installed in your vehicle for troubleshooting and documentation.
