ScubaPilot

There is a slot in each of the two sun visors -- on the opposite side of the visor from the vanity mirror. Anyone know authoritatively know what these are for? I have read opinions that they have something to do with the Mark Levin stereo system acoustics and also that they are merely slots to hold parking cards, etc. Anyone know for certain?

I have read both the manual and the quick ref guide but cannot determine the methodology for shutting off the Power Easy Access System. Has anyone cracked the code on this?