Most Goldwings have a built in Radio and Intercom system. The Honda branded speakers/mics, like the intercom system itself on the 'wing are made by J&M. If I'm not mistaken they are a 5 pin set up. Honda only offers one 'level' of headset for either open face or full face. J&M offers many different styles and 'levels' so that you can find something to suit your needs and budget and these pieces are available online here. Check and see what suits your purposes best and who has the better deal.

Here are current J&M Intercom listings: