Hi all I have a mk3 escort that has a mark 4 dash init how do I get the fuel gauge to read properly instaed of backwoods ie. Full is empty well not dead full just over half and full is way below empy ?? And help would b nice I belive its a mark 3 sender as well ? Would that make a difference ? And I have one of them computer things that works on and of but dont think wired in prop does anyone no how and where to wire these in ? Thanks for the replys in advance reece