I have a 1985 VT700 project bike that I have been working on for about a year. I cleaned the carbs, put it all together recently and took it for a ride of about a 100 miles today. When almost home, it started losing power and fiercely, rapidly backfiring. Bike died and I pulled over. I found that with the bike in neutral, it started right up and I could give it throttle, no problem. BUT, when I put it in any gear, everything died ... all electrical went dead and of course it stalls. With engine off, if I put in neutral, lights, etc. come back on. As soon as I put in in gear even with engine off, all the lights go out. Any ideas what might be causing this? I am hoping it is simply a loose wire. As always, I appreciate the help.