Budget Gps Wired In To The Bonneville

Try cutting the wire on the charger cable and wiring it to your horn, that’ll give you a switched power supply. Positive to horn live using a piggyback spade connector and negative to earth.
FYI, I don’t think car gps work with helmet bluetooth sets

 

Most bikes can wire in a cigarette or bmwtype charger port, with many having a wire under the tank or seat ready to connect. Check your model and Assessories on World of Triumph.

 

I went a bit further you may intend. I've recycled my M/C Garmin Zumo and fog lights - now on the 3rd bike!
Basically, I tapped into a switched live from the rear light to hook up a relay switch for the GPS and the fog lights - everything is ON/OFF with the ignition key. I use the USB port to go inside the left saddlebag.
The pics show the under-seat wiring (I know, it could be a little neater) and the Garmin unit with the fog light switch just below it.
On other bikes I've mounted a cigarette power socket and run a switched power to it, then use the cigarette power plug from the GPS.
Before, I've used a combined fuse block with relay - then you can simply hook up to this device. One problem is that there isn't much room on a Bonnie to hide things but the wiring is fairly simple. I did read somewhere that there is an O.E. accessory socket under the gas tank. I think I found it but I didn't try to use it. BTW, the Triumph electrical connectors are diabolical to separate!
Steve T.

 

This may sound like it's coming from way out in left field, but how are your eyes? I have to depend on reading glasses for close-up vision, which I don't need while riding. I use a Garmin on my T100 and I can't read its' instructions without my glasses. So, to make a long story short (maybe) I have a Garmin with Bluetooth capability, an inexpensive Sena communicator, and I've paired the 2 together so that the GPS can "tell" me where to turn, and I don't have to rely on seeing it's instructions. You can get a Ram mount to attach a Garmin to your handlebar. Most Garmins have a USB-Micro connector, so you could get a 3 or 4 foot charging cable, attach it to your GPS, then run it under your tank to the USB connector under your seat. Here's a pic of my arrangement

 

Never thought of using the USB directly for the GPS. That could really clean up my rats nest of wiring!
Thanks, I may look at doing that.
Steve T.

 

Happy you located the battery source, just remember to disconnect to stop power draw when not in use