My question is how long has the fix been working?  Have you checked the wire
when in operation for getting hot?

Its entirely possible that the connector itself just doesn't cut it.  One
example.  In the 90s Harley had their own 3 pin headlight plug.  Fit a
standard headlight, but was their own hard plastic design.  It was notorious
for melting and causing problems.  The Harley fix was to just sell you
another of the same plug, and it would often melt again.  My fix on two
different bikes was to replace the plug with one of the generic off the
shelf molded rubber ones from my local auto parts store.  Problem solved
permanently.  Really.  Passed this on to a couple of my riding buddies with
similar problems.  Problems solved again.

However, he has a point.  At the very least you need to check and make sure
that the problem is not going to melt something else.

Well, most likely a bad connection.  No blown fuses if thats where you were
going (pulling to many amps)
I didn't put my amp meter on it but I did run it for about 20 minutes and
felt the wire. No heat.