Jeff, maybe you could flip the coin the other way. Instead of J&M, have you considered Edsets.com? They make speaker/microphone kits with Goldwing connectors specifically for half helmets. Look at their website first. If you're interested, call them before ordering and hope for some straight answers.
2003 GL1800/MotorTrike Adventure IDMWT#25x3
Ride often. Ride far. Ride safe and do much more of both.
Give a man a fish and feed him for a day. Teach him how to surf the GWOF and he won't bother you for weeks, maybe months
I'll be waitin' for you at the end of the road.
If everything had gone as planned, it would not have been an adventure.