2007 fjr .. I had this very problem. Back in 2014 or 2015 the bike would not start and the digital display was showing odd data. Then randomly after I towed it to the dealer, it started for them. They said after they disconnected the brake light fuse, then they replaced the brake light relay... I said you guys don't understand electricity, that is not the problem, they said no we got it, come pick it up. I showed up, bike wouldn't start. They were perplexed, I tried to explain DC voltage to them. They then (under a lucky extended warranty I had on the bike, girlfriend worked for Yamaha, I got it for nothing) started replacing everything electronic. Yamaha was calling the dealer saying please figure this out, we are loosing money. They had replaced almost everything they could, then the dealer said the battery was bad, I said no, it's 1 year old and cranked the bike for hours, they said their tester showed it bad. They had a cheap battery tester, I took it (literally) next door to battery plus and they load tested it, ran it on their tester, etc. It passed with flying colors. Dealer refused to do anything else unless I bought or brought them a new battery so I forked out the 85 dollars to battery plus who almost went next door to try and explain batteries to the dealer, I discouraged it based on the events to date,,, and I handed it to the service manager and warned him, when this doesn't fix it, and it won't, I will let you know in front of your people and the store owner you have no clue what you're doing. It didn't work, I let them all know. Then they were sent a new wiring harness from Yamaha. It started every time after that so I took the bike home assuming it was a bad connector somewhere. I put 5k more on it (daily rider ~30k a year on a bike) and moved the bike to Cali from Georgia. It's a grocery only bike these days. Within a month in Cali it did it again. A very good technician at a local bike repair place where I live in northern Cali who they call in to solve hard problems found the problem in 3 hours. The ground connecter in the cowling looked melted. All the ground wires come to it. He gave me the parts in a baggy. I am an electrical engineer (Purdue University) and as the engineering manager for a large fortune 100 company, decided I had to hear how he figured this out. It was an impressive explanation, so impressive I dug deeper and learned about his background (learning computer programming at local college, other dealers call him to solve tough sensor problems etc). I just finished the hiring process and he now works for me. He is employed at a fortune 100 company as an automation and controls technician learning Allen Bradley programming and keeping automation equipment at our manufacturing plant running, base pay is ~70k. So yeah, great story with great ending but if you have some weird electrical gremlins, check that connecter. After seeing it, I now know what the Yamaha dealer missed and why they missed it, until you remove the side that connects to the frame, just looking at the female connecter or the male frame side connector will not clearly show you the reason you get a high resistance ground which causes the other problems. I have the baggy somewhere with the part in it and should add the picture for you guys but it's late and I'm lazy. Check the connector. Good luck.