Hi guys just brought a dt125r 1989, for some reason the old owner put a 2005 loom on it and could not get a spark, could anyone give me a simple diagram to follow to enable it to run ? Thanks Ben

I would recommend saying high in the new members area.

So you haven't got a manual for it then?

Not sure what "a 2005 loom"  refers to?

If no spark...
Check key switch and kill switch, especially if corroded
Check the plug wire  follow it to coil, everything look right?
Remove the gear shift lever
Pull the flywheel cover.
Inspect the flywheel, corrosion remove with emery cloth
check for spark after cleaning.
still nothing, pull flywheel and inspect /replace stator plate.