coils

undefined any one know if these coils will work on kz750  (1) Marketplace – Yamaha Diversion 600 Coils | Facebook

The primary resistance must be the same as your current coils.  Secondary resistance is probably good enough because it's good enough to fire a Yamaha.

Ignition coils are one of those things I'd avoid buying used if possible.

yes new would be good but i need a lot of new at the moment lol just trying to see if i can get engine to run. is there any diagrams that show basic wiring just to get engine to run leaving out ignition , kill switch , regulator rectifier nice and simple for simple guy like me this is all i have at the mo

Simplified wiring diagrams by loudhvx. bare bones for mattylight >> Pg 1
kzrider.com/forum/4-electrical/172746-19...r-mattylight?start=0  

A few of the diagrams may be missing. pages 11-on seem to have the most diagrams.   Not sure what 750-4 you have,
but you can probably use the diagram from a 750E/H or KZ650H CSR >> these models have the same charging/ignition systems. 
KZ650 H1 diagram for Chum >> kzrider.com/forum/4-electrical/172746-19...t?limit=20&start=260

note: I'm getting completely different results when I search the internet than what I'm finding here on KZR. Internet search shows the Chum diagram on pg 14, but it's on pg 24 when I search on KZR. weird. the internet search may be showing archived pages or something. not sure.