Originally Posted by cpoo
Thank you. Found it. I thought it was a button. Now I know why it was weird. I open the door to cool the boxes in the overhead and the heat is on it. No just ventilate door to overhead and it is much more consistent with the setting.
I had the same concern as you so I installed a couple of 12-volt muffin fans along with a manually adjustable "thermostat" to keep the electronics cool. those fans run constantly but they're very quiet. I can shut them off entirely when the MH is in storage.
in addition I ordered a replacement door for the overhead cabinets but without the solid panel. in place of that panel I used a piece of rigid screening that allows the hot air in that space to vent to the MH interior. it's not only functional but it looks good.
last year we ordered a MagnaShade windshield solor shade. the installation required us to completely remove all of the electronics in those cabinets in order to install the solar shade magnets on the upper portion of the windshield. after the magnets were installed but before we re-installed the electronics I had the space between the back of the cabinets insulated with reflective foil material. that
has really made a difference. the muffin fans helped but the insulation did such a good job that when we reached Phoenix 2-weeks ago and encountered 95-100 degree heat and parked into the sun we were able to run the electronics (sat TV receiver among them) with the cabinet doors closed with no ill effects.
just food for thought.