Spark colour

[mickm]

I’m having problems trying to start my Classic. It’s been dormant over the winter. It rode into the garage,but will not restart. I’ve replaced the plugs,leads, and plugcaps. I was getting a green led on pressing the button, with a red flashing on cranking. After cleaning all the connections I now get no green led, a flashing red, and a white/red spark. I’ve cleaned earths from battery and alternator. Have two batteries so no voltage drop, but still no joy. I’m at the point of sending the unit to Graham for testing. Before I do this has anyone got any ideas that may help.