Borg Warner condenser part number: G126

You can substitute the Motobecane condenser for a Borg Warner condenser part number: G126, it is made for 6V and 12V 60's and 70's cars .Also the NAPA RR-176 (1972 Chevy Nova - 6 cyl) condenser.  It will work on the Motobecane 6 Volt ignition system. You may have to mount it outside of the magneto, there is a little round space already made for it on the back plate. All you have to do is drill a hole for the wire and one  for the mounting screw. Motobecane did installed condensers on this spot for some of the 50 V models. A square condenser was mounted inside when Motobecane switched from 6V lighting system to 12V after January 1978. Some models had the round type condenser on the outside. .

  How to install the condenser on the frame under the fuel tank.

Napa part number:11009

Napa sells this dash light as a 12Volt , they are the perfect fit for the Motobecane dash lights

This is for the 12V lighting system mopeds.

From Daytripper. 6V bulb

The speedometer illumination bulb is the same as used in a VW bug 67 and newer and is 12V . The 66 and earlier VW bulb looks the same but is 6V

Wagner lighting products makes the 12 Volts sealed beam for the 78 models and later, # 4411 and #4416 for the high intensity bulb. You can get them in any car parts stores. Ask for a tractor sealed beam.