The Lambda counter is inside the car on the drivers side, near the pedals. Is is a white box with a electrical connector, and the spedo cable through it. The counter was based on a "percentage of use" for the Lambda sensor (O2 Sensor). This box simply turns the "Lambda" light on when the counter reaches 100%, letting you know that you should have the Lambda system serviced (based on your mileage). There is nothing all high-tech about this counter/light thing. It is not like modern cars where the "check engine" light comes on when a real problem is discovered. On my car, I just disconnected the light. I was considering trying to modify the Lambda counter in to a speed sensor for a cruise control. Then at least it will be useful! As far as how much mileage you can expect form a well taken care of DMC, I would hope that is infinity! I think there are a few DeLoreans around with over 200K on them. The key is how well it is taken care of. I think this is true of almost any car. corry bailey wrote: > > Does anyone know how to read a lamda counter and where is it located? > What is the amount of milage you can expect from a well taken care of 5 > speed delorean? > Thank you. > Corry