I think I am having electrical issues with my 07 6.0. A couple of days ago when I started my truck the door ajar warning and dome light stayed on. The alarm chimed for a minute or two along with the dome light staying on. This is happening now almost every time I start my truck. I noticed that my SCT gauge screen is showing battery voltage dropping to around 11.4 after startup. It goes up to 13.8 within a minute or two. Are the two things connected? The light and door alarm go away once the voltage is back up to 13.8. I also noticed that a couple times when truck is started the voltage doesn't drop below 12.5, at those time the door alarm and dome light act normal and do not stay on. I haven't had batteries or alternator checked yet. The batteries are 3 year old Motocraft and the alternator is original. The truck has 195,000 miles on it. Any info is greatly appreciated!!