Cigarette Lighter and Blower Relay Wiring Questions

[Classics Fan]

I have a 1971 Jimmy that I discovered the cigarette lighter had stopped working. Related to that I believe after investigating and doing some research, recently I noticed a burning smell when the heater blower speed was set on high. It goes away on lower settings. Anyway when I looked at the cigarette connection on the fuse panel I found that connector (orange wire) had some melting. I replaced the connector but the red wire at the back of the lighter still doesn’t have power.

That led me to doing some research and I found the first photo below on a different forum post. It shows both an orange wire and red wire at the CIG fuse panel connection. The second photo is my panel. You can see it has only the orange wire (blue arrow) however, there is also a separate red wire (yellow arrow) I found disconnected that I thought might be the power to the lighter. I connected it to the fuse panel at the post that is directly below the cluster connector (red arrow, it has unswitched power) but still nothing at the lighter.

Anyone have any ideas on what could be going on here? The lighter worked until it didn’t. I hadn’t removed or disconnected any wires at the fuse panel. One thing I found strange is the CIG connection is unfused. Is there a fuse or fusible link somewhere else? I tried to trace the red wire back from the lighter but it disappears behind the dash panel and I didn’t want to pull the panel until I had some answers to my questions.

Thanks in advance for any insight.