I have a 2001 R1100RT with this problem. Three days ago the electrics worked great. To day, the bike starts but none of the lights come on. The one exception is the brake light and the Priority break lights when the brake lever is pushed down. I have checked the fuses, all OK. Probed the fuse sockets for twelve volts after connecting a ground wire to the negative battery terminal. Two fuse sockets had Micro voltage, all the others had 12V. Swapped like relays around after applying die-electric grease. And checked for loose connection, none found. The only electrical work I have done recently was to replace one of the electrical wires sets on my Motolites.
Where are frame grounds on the R1100RT? Any ideas what causes the problem and it's cure?