For those of you wanting to be able to use 2 bluetooth headsets on your RG/ RGS and can't because you don't have the 7-pin DIN connector, I have gotten it all worked out and will try to walk you thru everything you need. If you already have Sena 20S Evo headsets, you are way ahead of the game. My info will center around that since the Sena 20S Evo is what I chose when I started this journey. Now Harley uses the 20S for their setup but you have to buy the one that they have their stamp on, and it is more money. (Of course!) I will attempt to add links but forgive me if I am unable to, I have never done it before. I do have pictures of the install for those who have some difficulty following directions.
Okay, I purchased 2 of the Sena 20S EVO, get them wherever you get the best deal. Purchased 2 of the Sena Freewires, get them wherever you can find the best deal. Then I purchased the cable to connect from the back of the Boom stereo to the 7-pin DIN. https://www.sierra-mc.com/proddetail...IE-SNA-FW-14HD I got this one because it is longer and I installed my 2 Freewires in my tourpak so I can plug them in to the power outlet in it and I don't have to worry about turning them on every time I get on the bike or have to charge them every day. Next I purchased a splitter cable for the 7-pin DIN connector. https://www.ebay.com/itm/391492162590
PAY ATTENTION HERE! This is an 8-pin cable. On the end with the pins sticking out, use a small pair of needle nose pliers and gently twist and bend the pin in the center until it breaks off at it's base, it is not used and keeps the cable from plugging into the 7-pin DIN connector. The next thing you need, if you want to plug the two Freewires into the bike using one plug using USB(saves space) you need 2 USB to 3.0 barrel plugs. I scoured the web for 3 weeks and no-one knew what size those barrel connectors were, not even the people at Sena. Well, I measured and went thru every one made and found what they are. And these are the cables you need to plug into the Freewire to charge while on the bike
Okay, now I think we have covered all the parts you will need to do the job. At this point, if you don't know how to take your gas tank, seat, and fairing off, see someone that does and get them to help you or pay Harley to do this. Take the cable from Sierra Electronics and locate the grey 12pin connector on the clip on top of the headlight. Remove the headlight and plug the 12pin connectors from the cable and stereo together. Run the DIN connector end thru the hole in the frame and out the right side where the brake lines exit, open the wiring tray and run the cable thru the wiring tray to the battery area, close wiring tray. Continue running the cable down the frame and if you have tail lights, run the cable up thru the grommet with the wiring for tail lights. If not, run it thru hole on bottom right front of tourpak. Leave at least 8-10 inches of free cable inside the tourpak and run the DIN connector thru the hole with the 12volt plug in. Make sure to use zip ties to keep all your wiring secured to the bike frame. When you get your Freewires, inside the boxes you will find the cables that are 7-pin DIN to micro-USB that plug into the Freewire. Take each of those cables and plug them into the 2 female ends of the 8-pin DIN splitter cable from the list and plug the other end(micro usb) into the Freewires. Put your dual USB plug in the 12volt receptacle and then plug the 2 USB to 3.0 barrel plugs into the center plugs of the Freewires. Leave the Freewires turned off as they will automatically come on with the ignition if you have the 12volt power plug wired in with the ignition(stock format). I suggest that you charge your headsets and your Freewires prior to the install!!! Before you start buttoning everything up, test everything to make sure it works!!! You MUST make sure your 20S EVO headsets are set to MULTITASK, otherwise you will not be able to hear the other person and the radio together. I had a small zippered bag from Cycle Gear that my HeatOut cap was in that I used to stuff all the cords that are in the tourpak into and velcroed it to the side of the liner. Feel free to do whatever you want. Once you have tested that everything works correctly, put everything back together and enjoy.
Hope this saves someone a lot of the headaches that I experienced during this process.