That's what some of us figured, but have never found out for sure what happens with it. I intended to check it out but didn't get to it. It should be fairly simple, watch with a timing light during starts with the red/white connected/disconnected.Red/White wire for the CDI unit comes from starter switch with + polarity. This signal to the CDI unit occurs only when the engine is in starting phase. I think that makes some kind of ease for starting the engine.
Hey Niko, I'm working on a replacement ignition controller on this thread.Hi, my "new" Vulcan 750 '98 has no ignition advance for rear cyl, front is ok. Any suggestion to solve this problem?. Top speed 70 mph.