@Grit dog and @DrewE
agreed...moving forward with getting the airbags operational. I followed the tubes and they terminated here:
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I took a look at 12VDC compressors just now and there a lot to choose from, so that's a research project on my plate. Air Lift has a good page that describes how to select one.
airliftcompany . com/workshop/choose-on-board-air-compressor-system
One thing I'm seeing is that perhaps a dual-path system will allow me to level the rig left-to-right when it's uneven. Hmmm.
And I agree with this: "Personally, not worth putting a pile of money into the back of an old RV for a couple inches ground clearance."
I'm happy to be finding lower-priced solutions as I proceed (it doesn't hurt that my solutions also happened to be already installed). In particular, it seems I should flip the order of my last list above and get the air bags going right away:
1. Get air bags working
2. Consult with suspension shop
3. Replace the leaf springs
4. Replace shocks
5. Install rear stabilizer bar
@pianotuna thanks for the suggestion; never heard of that product and I can see the value. Will keep that in mind.