I have the factory installed tow package with the factory controller I'm new to trailer pulling so was wondering should the brake control setting stay on the setting when ever you shut the truck off as long as the trailer is hooked up or will I have to reset braking level? also does the brake controller setting display stay on the instrument gauge center while the trailer is hooked up or does it go out after a few seconds. I have had a trailer hooked up and my display goes off after a few seconds want to make sure it is right also can't tell for sure that the setting is being the same as I restart the truck after stopping for fuel and lunch. Thanks for any in sight to this. Carol