Welcome fordcouga to the Newmar forum and irv2.
These lamps can be found at Home Depot
They will brighten up your living area and are reasonable.
If your wiring in steering column goes over a metal bend at the top of it the wiring harness maybe chafing over this bend when you adjust your steering wheel height.
My bend had a burr on it that worked thru wiring blowing a 40 amp fuse and causing the insulation to burn and had a puff of white smoke up out of steering column.
After it was repaired I place a spaghetti wire around harness no problems since.
Check the grounds off HWH solenoids to ground at your jack pump location.
Repairman may have been working around them and didn't check when he supposedly tested his work.
You can find alot of info in the Quick Tips & Mod link on HWH and much more info by Newmar owners.
Enjoy the forum and good luck with your MA.