I guess I’m just looking for a dumbed down version like my drawings.
Thanks for sharing what you had.
Maybe I am missing something here but it doesn’t look like the question got answered. “Will I still be able to turn lights on and move slides in and out?” Short answer is no. Assuming you disabled or removed your converter when installing the multiplus(as you should have) you will have no 12V power at all without batteries. My question is being plugged into shore power, why would you remove your batteries? The Multiplus(assuming programmed properly) will be an ideal battery maintainer while your rig is in storage. Keep it simple.
I remove batteries because temps during winter range from 30 to -40 and i dont have heated lithium batteries.