Could someone please tell me the Ohms & Watts for the resistor on my YB100.  It's the one with a single black/yellow wire going to it.  It should be near the rear light but isn't.  Thanks 

There is no no actual 'read outs' .. so where have u mounted the resistor ?

I didn't have a resistor that's why I needed to know the ohm / watts to be able to get one.   Got it sorted now one from a Peugeot speedfighter works fine

.. oh OK it not blowing bulbs or boiling the battery then ?

Fitted a Peugeot Speedfighter lighting resistor works perfect