My V2 low beam is a H7 not H4.
The plug on my low beam also melted.
I purchased my bike used and with all service records it was shown the previous owner paid to have the LB globe replaced, I believed the female spade fittings were stretched when the new globe was fitted thus causing the heat that melted the plug.
I replaced the spade fittings myself and I have had no problems since except I have had another globe fail recently.
Did you have any work done to your headlight before it melted or was it all original ?
Some of the 19 rides in my shed
2014 V2, Snoopy
2009 Wee, Pumbaa the pig
WR450F, The Blue Postie Bike
YZ250N smoker with rego, Stinky.
Yamaha MT09 (FZ09), The Scud missile.
Club Lead not Club Med.
He with the most toys wins.
Out of my depth in a puddle.
Live life on the edge you will see more that way.
Ridding a motorcycle keeps things in balance.
At the end of each trail and at the end of each day history is made.