My OBC is stuck in metric units, and I would prefer the screwed up American units, how do I change it? Also, my wife was messing with the buttons, and now when you press the range button, the temp comes up, however the temp button still brings the temp up, is there anyway to get the range function back, or did something break? Also I would like to put some 4 or 5 point belts in my car, does anyone have any recommendations for some that are relatively easy to install? Thank you very much.