The result is you are melting the wires because they are carrying more current than they are rated for...
I really appreciate you getting involved and helping Ed.

Just to be clear though. The harness wires, leading to the connector, are not melting. They aren't even heating up that I have noticed.
The female pin contacts inside the harness coil connector, that the male coil pins slide into, are what is heating up. Then they very slowly melt that plastic harness plug they are inside of.
(A)
|| <- the two male pins
on the coil itself
(B)
UU < the two female
harness plug pin contacts
So my theory is this.
The female pin contacts were a bit sloppy, leaving some airspace between them and the male coil pins, which allowed some arcing to take place and generate heat.
This heat generation, slowly increases over time, because carbon builds up at the arcing points
and decreases current resistance. The lowered resistance then increases the arcing, that degraded the metal pin contact, part of which fell out of the connector upon my inspection of it. .
Is any of that right? Or have I made some wrong assumptions here?
On Edit: ( Clarified the stuff in red, and added forgotten detail about part of the metal contact falling out)
Maybe I can compensate for that, by getting a new harness coil connector and bending the female pin contacts together a bit more, so they fit tighter on the male coil pins, and the arcing will not happen anymore?
Man I am way outa my league here.
Please help.
