Ok, I have a "Gangster" swith for my tail lights on my bike. Installed it 6months ago. It is spliced in at the power supply out at fuse box. That same line Also controls my dash I.e lights and gauges. saturday my speedo stopped working. temp an tach work fine. now the bike pops an hesitates an even stalls when I get higher than 4,000 rpm........BUT when I cut the power off to dash AND tail lights it runs perfectly normal????This made for an intresting ride home from Daytona Beach. 280 miles. Any one ever have this issue an how did you fix it?