Here is one most haven't heard before. My wife gets a headache from the electronics on the newer trucks. I use a internet satellite to 'try' to avoid wifi and leave my cell phone off most of the time. She can be in the bedroom with the door closed and I'll turn on my cell to check email or whatever and she will yell at me thru the door, without looking, to shut off my cell. Made a believer out of me.
No, I'm not off topic, I love my 7.3!!