Okay.... 1981 CB250RSA - kick start model. Recently, my regulator overcharged and blew itself up, taking at least the alternator and possibly the CDI unit with it. The CDI shows scorch marks where the ignition feed from generator connects. Bought new Regulator - is five wires instead of the previous six but I'm assured the lack of sensor cable has been sorted internally. Either way, it's not part of the ignition circuit. Bought new CDI unit. Also found spare one I'd forgotten about. Got alternator which was listed as being for the electric start version (RSD-C) and looks significantly different to the original but phoned and was advised that as long as it has the same diameter and thickness (basically, as long as it fits) it would be fine. It has 7 more coils in charging circuits, and igniter coils are in different places. Also the faces of the poles are larger (both dimensions, so less space between each pole/post). I did advise all this to supplier. Put all parts in and I appear to be getting up to around 80v to CDI from generator (varies as it's kickstart I guess) and a signal from the pulser unit. But nothing at all at the positive terminal for the ignition coil. Also nothing at CDI for that wire, so it's not the wire at fault. Have tried... disconnecting the kill switch wire completely, makes no difference (but must remember to re-attach at least the ignition switch part or if I get it going I won't be able to turn it off!) checked earth wire on CDI - it seems fine. cleaned all contacts in ignition system I have been told that the differences in stator could well be the problem, but since I'm getting voltage to the CDI I'm a bit confused - anyone got any ideas?
