shopping list:
1 6 to 12V DC/DC converter, bought mine from Beck Electronics in the Netherlands 35 euros. https://www.beckelektronika.nl/
2 a car phone loader that goes into the lighter and fits your phone from any car parts shop or from Conrad
3 a classic look saddle toolroll for a bicicle to neatly store the contraption to your bike, cost 13,50 euros. an added advantage is that you can use the converter on any of your 6V bikes. mine is from Selle Monte Grappa (!).
4 a male female cable to disconnect the feed of the converter from the battery, I used a Ctec cable for this as I use the same plug for a Ctec 6V charger
5 a female plug that accepts the male lighter cable from any car parts shop or from Conrad
step by step:
1 solder the DC/DC converter to the female lighter cable, according to the scheme
2 conncet the cigarette lighter male plug to the female plug on the converter
3 put the whole unit in the saddle toolroll, hide it on the upper left frame under the saddle and Bob is your uncle!
4 disconnect the converter to your battery when you park your bike, connect it when you want to use it
this converter unit never failed me yet, and thanks to the European Union at no roaming cost with Google Maps
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