I'm from the keep it simple stupid school of thought. If you knock out and write down the numbers from the list below, 95% of the time, if there is a problem, it will be obvious. It got named the drill, when someone asked, --"Whats that drill you use to test the charging system?" Use it, it works..... Sorry for your electrical troubles. Well, looks like you gotta do…. “The Drill.” Go through all your connectors for burnt leads, dig deep. Crispy wires? Not good. Your gonna have to fix that! Then---Go through this starting point quick list. You will need a multimeter too. Steps: - Recharge battery overnite - then to take it to Autozone, Batterys Plus or similar to load test. -- Good? Bad? – An iffy battery can fake you out and act like a bad R/R. Buy new if needed. - With good battery fire it up, warm up for a minute or two. These are R/R quick checks--- --- With voltmeter at battery get voltages -- idle volts? 5000 rpm volts? What’s the numbers? Should be in 13ish min idle and in 14s at revs. If in the 12s at idle, try at 1900 rpm. (It’s not unusual for the system to be in discharge or no charge at idle.) - Check stator - 1. Pull connector apart. Set meter to resistance. Check pin to pin stator side, 3 yellow wires, A to B, B to C, C to A. What’s the numbers? 3 separate readings --Should be less than 1.0 ohms. (Engine off) - 2. Check continuity from each A,B,C pin stator side to ground, -- -should be infinity - nada nothing. no continuity. -- 3 separate checks. (Engine off, again connector is apart) - 3. Crank it back up. Do another pin to pin thing, but set meter on AC volts. idle and 5000 rpms. What's da numbers? Should start 15 -20ish and climb 50ish and more. Again – 3 readings stator side connector and still apart. - Repeat hot. ---- You would need to do this if you bike seems fine for awhile, but once getting on the hot side, the charging goes south. Ususally its stator insulation effing up when hot. This quick list will catch the obvious stuff, but if you need to dig deeper check this chart. (Some guys like this chart, my taste, I don’t care for it.) http://www.electrosport.com/media/pdf/fault-finding-diagram.pdf