Any ideas on where to get a fairing for a 1992 FJ?
Looking at one of the largest Yamaha parts dealers in the states I found your 92 fairing is no longer available from the dealer. That's not to say some dealer doesn't have one sitting around on a shelf. if I recall correctly Frank M was able to find a NLA part by calling dozens and dozens of Yamaha dealers.
http://www.yamahasportsplaza.com/pages/oemparts?aribrand=YAM#/Yamaha/ABS_-_FJ1200ADC_-_1992/COWLING_1/FJ1200ADC_(1992_MOTORCYCLE)/COWLING_1_(FJ1200ADC_-_1992) (http://www.yamahasportsplaza.com/pages/oemparts?aribrand=YAM#/Yamaha/ABS_-_FJ1200ADC_-_1992/COWLING_1/FJ1200ADC_(1992_MOTORCYCLE)/COWLING_1_(FJ1200ADC_-_1992))
Your best bet is someone here selling one or Ebay.
Eric M