Last Fall my voltage regulator died and left me stranded. I installed an OEM regulator I bought used on eBay. It worked fine until today. 30 mile ride home. 4 miles away from home my check engine light came on, on the expressway. 1 mile from home the bike lost a lot of power and sounded very loud through the air box. 100 feet from home the bike died and I coasted right into my garage. Got lucky this time but I'm getting tired of fixing my Monster.