Fixing a Bluetooth Controller on a Motorcycle: Please Educate Me

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A user is attempting to extend the cord of a Bluetooth controller for motorcycle speakers but encountered issues after soldering a 12" extension with 18 gauge conductors. The original cable is a shielded 6-8 wire, with a smaller gauge of 26-30, which may be causing compatibility problems. It is crucial to update the radio EQ through a Harley-Davidson dealer before using the audio system, as failing to do so can damage the speakers. The discussion highlights the importance of following installation instructions and ensuring proper connections for functionality. Seeking installation manuals and further guidance is recommended to resolve the issue effectively.
Shaneyj
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A friend from work bought this product for his motorcycle.
It's a couple of speakers with a Bluetooth controller. The controller will adjust volume and allow the user to toggle through tracks playing on their phone.

The cord was too short. So he asked if I could make it longer.
Sure thing.

Chop it in half, and it's a shielded 6-8 wire cable. Gauge is small, like 26-30. Smaller than I work with (industrial electrician)
I solder a 12" extension using single 18 gauge conductors. That's what was available.

But it no worky.
Any thoughts as to why?
Please educate me.

Thank you

Here's the link to what he has...
https://mstore.harley-davidson.com/store/boom!-audio-bluetooth-cruiser-amp-and-speaker-kit
 
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Hmm, the HD link is only marginallly helpful. When I click on "Fitment" to get installation instructions, there is no joy.

Can you post a link to the installation instructions and user manual? That may still not be enough, but maybe there is a clue there. Thanks.
 
Is this the right product?

https://serviceinfo.harley-davidson.com/sip/service/document/216335?locale=en_US
Did he have Harley "update the radio EQ" (whatever that is) ?
Radio EQ MUST be updated by a Harley-Davidson dealer BEFORE operating the audio system. Operating the audio system prior to radio EQ update will IMMEDIATELY damage the speakers. (00645d)
Radio EQ update using the Digital Technician® II diagnostic tool is:
  • Recommended before speaker INSTALLATION
  • Required before audio system OPERATION.
  • Only available through authorized Harley-Davidson dealers.
scary.
 
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