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  • MINI Cooper X9331 Amplifier & Speaker Wiring T-Harness

MINI Cooper X9331 Amplifier & Speaker Wiring T-Harness

Availability: In stock
$99.00
  • Overview
  • Installation
  • Faq

Use this harness to install any combination of subwoofer, amplifier, and/or new front speakers.  Provides a tap to the headunit output front speaker channels  via RCAs.  Provides a tap to the front speaker input on vehicles equipped with the standard 6-speaker audio system.  This is a simple T-harness, a slightly updated version of the T-harness that ships with out legacy subwoofer-only systems.  This is NOT the MCWH-SIG-R integrated signal harness that ships with our Soundstage™ systems.


  • Works in all R55, R56, R57, R58, R59 vehicles (Not sure which model you have?  Check here.)
  • Does NOT work with R50/R53, R52, R60/R61, F55, or F56.
  • Works with any factory audio option for signal tap.
  • Front speaker tap works ONLY in standard 6 speaker equipped vehicles.
  • Contains passive circuitry to enable proper operation with the output transistors in the MINI headunit.  

PLEASE NOTE: This is an unsupported product!  We make this harness available only as a favor to the DIY audio community.  We can not assist you with troubleshooting installations of other equipment.  This harness is a simple pass-thru, outside of testing/exchanging/refunding a defective harness, we can provide no support.

Find an Installer near you:

Looking for a qualified professional to handle installation for you? Use our Find An Installer page.

Do it yourself:

Prefer to do it yourself? We've got you covered. Our installation instructions are the best around. If you can handle moderate around-the-house-DIY projects, you can handle this.

These are some of the most common questions about our X9331 harness for the MINI Cooper. Still don't see what you're looking for? Ask Us and we'll get you an answer lickity-split.

  • Will this work in an R60 Countryman?

    No, sorry. The R60 Countryman uses a different connector.

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