In reality the Versys and every other Kawasaki bike with the 650 motor has what I call the same flaw, it was designed to pull in the headlight once alternator power was sufficient to charge and run the motor, I say flaw and it took me 2 hours to figure it out after FastEddie told me his light came on without his connection from the stator to headlight relay ( bypassed original connector).sooooooooo.... looking at the diagram, the headlight relay is always in series with 2 diodes and the starter relay coil. that would indicate that the light relay is a special monkey right? the lighting relay must operate at a lower voltage and yet current limit enough to keep the starter relay from coming on uncommanded, so I'm guessing it's not an off the shelf relay & think that is an important point. a test as described is ok, but prolly not a good idea to go full voltage too long.
1wizard.... ever test one on a variable power supply to see where it comes in? just curious. I see what they are doin.... any time you push start, it puts plus on both sides of the headlight coil & turns it off.
the Concours had weirder one than that... it used the starter's armature as a generator to engage the rely as it winds down after start, then the relay would latch with alternator power
So what happens is release of the start button on a fairly new battery produces a collapsing field on the start solenoid that is equal and opposite to the applied force, so ground is positive and the wire connected to the headlight relay becomes negative, this negative current goes through the coil through the blocking diode to the positive output of the relay through the headlights and then to ground, producing a very short burst of energy sufficient enogh to pull in the headlight relay, once in the relay latches.
I proved this and installed a free wheeling diode at the solenoid, my headlight relay is triggered by my brake light. Instructions are all over this site, some in burnt stators, I have started compiling under Polaris regulator install.