Paul - The box you have found is the lambda counter. This counter represents percent of 30,000 miles. When the percentage reaches 100, the counter turns on the lambda light on the dash indicating that the oxygen sensor should be replaced. The reason the wires are clipped is because your previous owner didn't know about or didn't know how to reset the counter. Mike -----Original Message----- From: Paul Salsbury [mailto:paul.salsbury@xxxx] Sent: Sunday, August 05, 2001 1:21 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] Speedo Hi all Whilst moving on with the restoration of my car. the speedo comes next, Instead of a straight cable to the wheels , half way is yellow/White box showing % of life used on a counter. What exactly is it and is it really needed as the wires leading out are snapped and will take some real work to fix ( I Can do this though).