Update...

Was out for lunch (Wisconsin), so too cold and snowy to look under the truck till I get home.

But was doing some t/s reading... and as I was coming back to work decided to try a few things.

Another post said to hold the centre diff lock for 2-3 seconds. Hmm, my orange light now lights. I don’t remember having to hold it the switch that long in the past.

But still, only the bottom 2 4WD green lights(wheels) are lit. The two top 4WD lights (wheels) are not light.

I do have to be driving for the orange centre diff lock light to come on…

Question:
Does anyone have a good understanding if the four specific 4WD green lights (wheels) are electrically connected to certain switch solenoids on the transfer case?

And I think I’ve read that there are two more switch solenoids on top of the transfer case that can be accessed below the center console. Is that correct?