I have searched and didnt find what i was looking for. I want to put in a push button for starter and switch (12 V hot) for positive coil. But the 2 wires going to the distributor , i figure one goes to neg side of coil , but dont know where other goes, or comes from.  this is an 86 mud sammy only. eventually will address alternator. I hope the is a 1 wire available. Thanks

Here is a copy of the wiring diagram for European Samurais.  Just found it while looking for something else. 

http://www.4x4.in.th/manual_sj413/chapter23.pdf

I believe Acks Faq also has a wiring diagram available.