Starter stays engaged ONLY in park???

Well the main thing is you now have your hands dirty and really starting to figure out the nitty gritty. The melted wire is a great example of 'what can happen' and this happens right in the wrapped up harness as well, sometimes. THAT can drive a guy nuts.

I do not know offhand what the 3 wire connector is. Here again --if you have not--get into the book beyond the diagram pages and look for the connector in the chart there for the "CI" connectors.