Hi new here wondering if anyone can help me bought a dt125 told to be a 1997 just been rebuilt but got a bad spark spark when the engine is initially turned over it sparks once and won't spark again until the engine has stopped spinning sorry for bad description hard to describe has anyone had this fault before or know and likely culprit or does anyone had a set of resistances ? Can't find them anywhere cheers 

If you get a manual it will tell you the resistance values for the relevant components.

Does the wiring from the generator case look to be in good condition?

everything looks to be in good condition and looks to be working was hoping someone had the resistance values handy to save me having to buy another one i have another manaul for dts but it only covers up to 1991 are the should the values be the same or similar to that of a 91 dt forgot to mention its a offroad dt so alot of the loom is missing 

Resistance values would be similar I expect. But you've probably hit the nail on the head yourself there. If the loom's been butchered then it's probably a bad connection somewhere