I have a Tekonsha P3 brake controller that I have had mounted underneath the dash on the driver's side for 4 years. Recently, on my way home from Florida, I got into a really nasty fishtail thanks to a motor home passing me at about 90mph and thought I was going to lose my trailer and truck. I could not reach the manual knob to apply the trailer brakes because of the underside mount. So, I decided to remount the controller on top. However, because the controller only comes with an underside mount, so it is now mounted upside-down. Will this be a problem? At least I can easily get to the manual knob.