this was already fitted to the car when i got it,and it seems to be working but not completly sure as i have no instructions for it...there are 3 buttons on the front but no idea what they do...when the car is running the display alternates between 45-48 then when the ignition turned off it shows the number 10 and then counts down to 0 before switching the engine off......... anyone got any instructions as to how this unit operates so i can check ive got it set up ok,as after a decent run i would have thougt more than 10 seconds would be needed

cheers