Is there an obvious reason for the fuel level to increase when I switch the head lights on ? I'm using the 5v to feed sensor an have checked the earthing points.

I'm using the sensor you guys supplied with the led on it although this does not light up at all? An it reads of the back of the wheel studs. Four stud wheel.

I have now got the speedo working correctly but it reads fine upto say 10 mph but then reads 0mph at higher speeds??? Any ideas please?

Hi all I have done the calculations as per rt In meters 1609 / 1.78 = 903.9 x 48 That's based on 1609 meters to mile Wheel circum 178cm An reading off abs ring 48 teeth Total is 43416 But can't enter anything over 12000 on dash! Am I doing something wrong or is there a limit to the teeth which can b...