I live in Texas in the United States.
I have a 2-gang plate--one gang is occupied by a switched duplex outlet (not half-switched half-hot, but entirely switched) and the other gang by an outdated nightlight+switch unit manufactured by Eagle Electrical. This switch controls both a ceiling light and the duplex outlet aforementioned.
I would like to convert the duplex outlet to be entirely non-switched and hot; in other words, I don't want the switch to control either of the outlets anymore. (The switch would only control the ceiling light.)
Below is a drawing of the configuration I found when I looked behind the 2-gang plate. Everything was encased in an outlet box and I did not take out, nor look behind, the outlet box.
It's a bit complicated. At the top I've drawn three flaps (these are the flaps at the back of the outlet box) and coming out of each flap is a black/white/copper trio of wires. Throughout, B stands for black wiring (which I've also drawn with black marker), W for white, C for copper, R for red. There is one shaded cable coming out of the switch (the switch is in the lower-right of the drawing)---this shaded cable was brown.
Also, yes, the duplex outlet is upside down. I'm told this is common for switched outlets.
Main Question. How can I reconfigure this so that the duplex outlets are hot, and no longer controlled by the switch? I am not a professional electrician, so any guidance on what coloring I should use on any new wires I need to connect would also be very welcomed information.
Is it possible that there is another device, and not just the outlets and the ceiling light, that is somehow controlled by this switch? (I couldn't otherwise figure out the need for the three black wires into the three flaps.)
Is the drawing enough information to safely rewire to achieve my goal? Or do I need to test something, or understand what's behind the flaps, to proceed?