Just a heads up, I picked my my 18 SERG on Sunday. Yesterday I got around to trying to Pair my wireless headset with the bike. Seemed simple enough to do. On Head Unit in setup menu there is a line item wireless , click on it and it goes to the option to enable rider or passenger head set, and the option to pair either. So I enable rider, and select pair rider. Once I do that it tells me to place the head set into pair mode.
I do that, and a minute later I get a failed to pair message. Tried two more time, no luck, so I then tried passenger and got same failed message.
So I go to Harley web site. See there is a download for the WHIM module software. I have to load an installer program on my laptop. Then I follow the instructions and load the new software into the WHIM module. Try to pari again, now it doesn't pair and I do not get the failed message. So then I check and there is new software for the Headset bluetooth module. So using the same installer program I update the bluetooth module.
Now it pairs very easily step by step just like the head unit says.
So if you have issues pairing, check all software to make sure its up to date, on headset, on WHIM and for Head Unit.
Very glad this will work on a MAC.