So I have made so progress. Turns out new Starter relay, from Caltric, was part of the problem (not happy with them, always seem to have problems with their products). I found some ground wires that weren't connected (both located on shifter side), and re-installed original starter relay.
Now Start button works, Kill switch still works, Ignition key needed to start (but wont stop with key in off). Checked Ignition switch, OK. I win for me, even if not perfect.
Rev Indicator allows on, Headlights work, but only High-beam selection. Didn't have any of these previously, again a win for me although not perfect.
Neutral Indicator not working.
Where does Reverse Indicator get its signal?
Where does Neutral Indicator get its signal?
BTW I found out that it is a 1993 Timberwolf. Please add to subject line.