$48 for great sounding Bluetooth, volume adjustment on wheel, 1year Sirius/XM for $60
I have been streaming Pandora using my $50 bmwstream2air and happy with the sound using the bike’s factory Bluetooth to my Sena headset. Sirius/XM recently came out with a special that gives you a year for $60 on inactive receivers and I signed up. I forgot how bad the sound quality was using the factory Bluetooth and satellite radio and initially regretted my decision.
I decided to try using another Bluetooth transmitter to broadcast the audio in place of the factory Bluetooth as others have done. I have a Sena SM10 not being used so all I needed was a line out converter. To keep this a low budget build I used a $9.50 PAC SNI-35 Variable LOC Line Out Converter from Amazon instead of the $90 Motochello audio speaker bridge that others have used. Google or search in Amazon for a “line out converter” and you will find many cheap options. The only difference I found from the Motochello unit is that the other converters do not have the speaker off switch. For this I ran a set of wires from the bikes positive speaker connections under the seat to a DPST switch in the right side compartment with the current iPod/Aux connectors. I am able to turn the speakers on and off without removing the seat (or wherever it is mounted) as needed with the Motochello unit.
Connections from the bike’s right side Alpine/Sirius/Bluetooth unit to the PAC SNI-35 line out converter :
Bike’s Yellow/brown stripe trace to the white (left Positive)
Bike’s Yellow/red stripe to the white/black stripe (left negative)
Bike’s Blue/white stripe to the grey (right positive)
Bike’s Blue to the grey/black stripe (right negative)
Once the line out converter is connected, plug a bluetooth transmitter into the RCA outputs of the converter. To keep this a budget build for all, I purchased a TaoTronics 65ft 4.1 Bluetooth Transmitter from Amazon for $38. This transmitter will support 2 headsets but only 1 input. If a second input is needed (for a radar detector), the $135 Sena SM10 works great.
If you do not want the speakers to play while using the Bluetooth, you need to disconnect the bike’s positive speaker leads. This can either be accomplished by cutting the Yellow/brown stripe & Blue/white stripe going to the speakers at the bike’s audio unit (Alpine/Sirius/Bluetooth) connector or unplugging the wires at the speakers themselves. I chose to run a wire and switch to enable/disable the speakers easily.
For a total budget build without cutting the harness I would use the PAC SNI-35 and connect it to the speaker lines as outlined above using Posi-taps. To turn off the speakers I would disconnect the wires at the speakers. Just add the TaoTronics 65ft 4.1 Bluetooth Transmitter for $38 and you have everything working for $48!
If you don’t already have USB power for the Bluetooth transmitter any 12v to micro USB converter on Amazon will work ($5-$10).
To waterproof the converter and transmitter, use any cell phone/electronics waterproofing spray or just wrap them in plastic with a twist tie. They do not get hot and the plastic wrap is free.
Sena Headset connections:
Connected the Sena to the TaoTronics Bluetooth unit as “Media Only” (A2DP Stereo Music Only).
To use the Garmin as your phone interface, connect your cell phone to the Garmin Nav and then connect the Garmin to the Sena as “Phone selective pairing” (phone only). Unplug the center, large 2 wire connector from the bike’s audio unit. This is used to provide the spoken navigation directions to the bike’s audio. You will receive the navigation directions directly from the Garmin to the Sena from the phone connection.
Boost the bass on the bike’s audio by enabling the “loudness” on the audio menu setup for improved sound.
This setup sounds awesome!
My intentions are not to bash Motochello or Sena, just offering a low budget alternative.
Last edited by kurt404; 12-29-2017 at 09:09 AM.