My Suzuki DL650 2007 all of sudden refused to start. Pressing the start switch causes the lights to cut off (which is normal) and the fuel pump to come on (also normal) but there would be no cranking of the engine. There is no clicking sound of the ignition relay, just nothing.
After troubleshooting the issue the problem turned out to be the clutch switch. It is very easy to fix. It is also very easy to bypass if you are stranded on the road.