Can I put 12 volts bulbs on my 6 volt motorbike
Yes you can. You need to add relay for the 12volts light bulb to prevent you CDI (capacitive discharge ignition) circuit from frying.
Other people asked questions on similar topics, check out the answers they received:
Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them