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Cardellino Electrical Questions

Discussion in 'MonoCylindrico' started by GT-Rx®, May 20, 2020.

  1. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    My 1956 Cardellino came with most all of the wires from the switch cut off and two wires coming out of the back of the magneto, a black and a green (red heat shrink on the coil).

    I have downloaded a manual and there is a simple electrical diagram in the text, it does not show a detail of the magneto indicating the two coils, points and condenser or how they are wired.

    IMG_7194.JPG

    On the electrical schematic there are three wires numbered (1) - Rosso to tail light, (2) - Verde to the switch and (3) - Nero to rear brake light switch.

    after removing the rotor and unscrewing the lighting coil I can trace the two wires that came out of the back of the magneto casting, black is coming out of the copper winding on the center outside of the coil and green (RED shrink wrapped wire on my coil) is exiting out one end of the same coil as another fine copper wire. There is no third red wire. Also coming out of the end of the lighting coils is another fine copper wire that is soldered to the steel body of the coil.

    IMG_7195.JPG

    Any advice on where the third RED wire should be on the lighting coil, or is it supposed to come from the ignition coil ?

    I think I can figure out the switch, If I am correct the toggle lever is the main OFF/ ON, lugs A and B. Lug A would be the Verde wire from the lighting coil. Then Lug B takes the Verde wire up to the headlight.

    IMG_7205.JPG


    I am guessing lug 51 is Horn, 54 tail light, 50 / 30 / 57 is headlight Low beam / OFF / High Beam (or something like that????)

    ANY help with figuring this out is very much appreciated!

    canuck750
     
  2. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    en.wikipedia.org/wiki/DIN_72552

    You might have a kill switch too or may want to install one. Older switches tend not to have them.

    Mac
     
  3. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    Also found several pictures of the engine with three wires coming out of the generator (R / G / Y) but no picture showing me where the red wire connects inside the generator.

    switch.jpg
     
  4. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    So I removed the coils on my generator, no sign of a third (red) wire. There is also no tell tale sign that a rear brake pedal light switch was ever mounted. The tail light has two fetsoon bulbs assuming one is for the brake light, one black wire and one white wire but white wire was cut off inside the tail light shell.

    I wonder if this bike ever came with a brake light switch or a third red wire from the coils??

    The decal on the front fender indicates this was a domestic Italian bike, did they require brake lights?

    IMG_7161.JPG IMG_0707.jpg
     
  5. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    The only red wire I could find was from the rear/right side of the upper coil to the condenser. I have a green wire coming out of the backside of the flywheel directly to the brake light switch and nothing else attached to that wire. My bike was very original prior to the restoration but I know over the past 60yr someone had to have their fingers on the harness???
    Dave

    Does your Cardellino generator have two or three wires coming out of the case?
    Jim

    Three. A green one with a plastic insulation, what appears to be a yellow w/cloth insulation and a faded red one with cloth insulation.
    Dave

    So if I understand your previous response the red wire is attached to the wire that joins the upper (ignition) coil to the condenser?
    Jim

    Yes, as best as I can see with the flywheel still in place.
    Dave
     

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