The reason why those two new PSUs only have one 8-pin connector is because they both sport two 12V-2x6 sockets instead. The company does offer PSUs with up to three 8-pin and one 16-pin power slots.

and he managed to make this 12V LED bulb work in the 6V socket. An LED is a really great choice for this application since the Motobécane Moped uses a magneto generator to power the lights.