1984 mk3 ford escort 1100 (A163 LWW ) with fancy lights on the speedo If you were driving at normal acceleration they stayed off if you started putting your foot down they would change to amber if you really put your foot down it went to red as i recall i think the car was always ready for me the light was always red , changed clutch once then did a full engine rebuild (ford trained mechanic) as the timing chain started rubbing on the cover put an hole in it and oil used to drip out onto the exhaust manifold looked like the car was on 40 a day, great times.