Yes I’ve bought one of the 6v to 12v converters following reading the article but that’s as far as I’ve hot so far. Another project to do in the future.
There are no shortage of these units available on ebay ranging from around £4 upwards. The cheapest coming direct from China. I paid around £9 from a British supplier to get it quicker.
This is almost identical to the one shown in the Vmcc journal and is smaller than I imagined it would be, but that’s a good thing within the confines of the headlamp.
You can get sealed units which look much more purposeul and robust for around £25. But you pays your money. . .
Ill post again if and when I get around to fitying this. But please don’t hold your breath.