Hey guys was going for a ride on my DT 125 2000 when half way through my trip the bike just died. and after removing the spark plug and replacing it there is no spark. I have replace the ignition coil and regulator but still no joy the the dash works etc..... but bit strange how the bike just died. any ideas?

Try the wire from ignition [ usualy black/white. ] this is one to kill switch also;; dsiconect them, , if this fails , C.DI. box, conetions etc,,,

+1 yes try disconnecting the black/white from the CDI

hey guys did that no luck thinking it may be cdi.... but the old school cdi 1998 which attachd the oil container

http://www.google.com/imgres?um=1&hl=en&biw=1280&bih=709&tbm=isch&tbnid=Whor-6VcQbeUCM:&imgrefurl=http://www.motorradteile-zubehoer.de/epages/61126768.sf/en_GB/%3FViewObjectID%3D35653264%26ViewAction%3DViewProductDetailImage&docid=PHEaraic9y94bM&imgurl=http://www.motorradteile-zubehoer.de/WebRoot/Store4/Shops/61126768/46DE/C46D/6FCE/E8B3/2D6D/C0A8/28BB/E4FF/cdi_0068.jpg&w=600&h=450&ei=t-DoTofrIZTv8QPf3vT-CQ&zoom=1&iact=rc&dur=386&sig=113520504233786780576&page=1&tbnh=163&tbnw=201&start=0&ndsp=15&ved=1t:429,r:0,s:0&tx=131&ty=40

thats my cdi lads

Get your manual see whats what and check every wire.

I had this happen to me years ago, problem, one of the coil wires had touched the exhaust and earthed its self. Couldn't see it till the seat was off.