Hello all, I recently bought a Royal Enfield Crusader 250 which I am going to make a trials bike of. Mechanical stuff I am fine with but am a complete dunce when it comes to electrics. What I want to do is convert the electrical system so that the engine provides its` own sparks. There are 3 wires coming from the back of the engine that originate at the alternator, can any of you please tell me how to wire things things up so that a battery is not needed. I have the rectifier but no clue as to where to start or what to do. Any help would be great.

Don't know if this is any good for you,https://www.electrexworld.co.uk/acatalog/STK-109D.html

Thanks for that Sergeant B. It`s a start. It`s just a shame that so much of it would be wasted as all I require is sparks and not lights. No hurry I`m just gathering advance info. Cheers mate.

Perhaps https://www.electrexworld.co.uk/acatalog/STK-009.html#SID=826  ?

Thank you Carl, that would be perfect. Thanks everybody, what a nice bunch we are on here, lol

If you can wire the rectifier, then you need to add a zenor diode in to limit the voltage to roughly 12v. This will need to be on an aluminium base to allow it to dissapate heat. for trialing you might want to add a capacitor to where the battery would normally be but just to try it should be OK without

I bought a kit that just adapts the alternator, looks a good bit of kit too.