ziaptrn

Hello all - 
I am posting a "solution" to the Fantastic Fan lift motors spontaneously operating whenever the salesman switch/12v shutoff was activated or de-activated.
I replaced the 3 remaining fluorescent fixtures in the rig last week; two in the ceiling in the bath area, and one over the side counter in the kitchen beneath the pantry cabinets. Instead of using the LED strip lights as replacements as I have done in the past, I followed a suggestion by Veraken and am happy to report great success with the use of the following (Thanks, Veraken!!)
https://www.amazon.com/gp/product/B09QY8ZHM3/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
I never could find any wiring problems, voltage spikes, or other issues when testing power to the 12v lid open/close motors, but after removing the fluorescent fixtures along with their ballasts and replacing with LEDs, I no longer have the phantom Fantastic Fan lid open/close "feature."
Thanks to all who responded. I would like to note that Chris at M&M was correct in that the fluorescent ballasts must have been the problem. How the ballast 'surge' activated three different 12v DC motors remains a mystery to me, but the fluorescent removal and LED replacement did remedy the annoying behavior. I was able to test the master switch just now after powering the rig up from storage and zero problem with the lid motors activating.
John

A final follow-up on the Squealing situation. It took me a matter of months (since last November, to be exact), but today, the problem was solved.
After changing all of the leveling and air components that I could, the squeal persisted. No 90 degree turns in lines, I increased the line size to 3/8" on many of the 1/4" lines, I replaced pressure-protection valves and even the solid connections like elbows, etc. all to no avail. Every bump in road/dip/shift gave a small 'squeal', and a long-continuous squeal on moving air bags to travel mode as previously described.
I elected to change the shock absorbers earlier this year, and when the new shocks finally arrived, I elected to have some assistance(!) with the task and hired a friend of my brother who does some coach work for him to help. He is the nicest young man and at least 30 years my junior, which gives him an edge with mobility and strength both. I'm just not as young or as strong as I wish, and 10 shock absorbers was a large task. While underneath the rig, I asked the mechanic/assistant what he thought about the squeal, and we played "make the rig squeal" for at least 30 minutes trying to isolate the problem. His hearing was spot-on, and he immediately said "that's a stuck solenoid somewhere." The squealing sound resonated throughout the entire front tank and air system, and I just couldn't tell where it was coming from. We finally settled on the likely culprit being the Right Front ABS Modulator Valve - Bendix M32 version. While I was up top making the rig squeal, the assistant said that he could feel the left front modulator moving/vibrating, but the front right could not/did not. Closer visual showed that the small rubber gasket designed to keep water out of the valve was missing also. AHA!
Long story short - I replaced the right front ABS Modulator Valve this morning with a new one from Northwest RV Supply in Eugene, OR because they have a lot of old stock Monaco parts from back in the day. Perfect fit, and now....Blessed Silence.
I am posting to give final follow-up; we ended up moving from New Mexico to Alabama after the first of the year, and that I just didn't have time to work as much on the rig until recently. Thanks again to all who stepped up. Even knowing what is NOT causing a problem does 2 things for me - it not only helps to solve the issue at hand, but I also walk away with improved understanding of an increasing number of systems.
Best wishes to all and safe travels ....
John