Post
Fri Jan 25, 2013 10:39 am
Yup, the mileage is stored in the coding plug. Now, this can be swapped from cluster to cluster but only if the backing plates are the same colour. Early ones unbtil Feb '89 are light gray, later ones were white and from September 1990 (H reg onwards) they were replaced again with a light blue backed unit. Whilst you can swap clusters from car to car, the coding plugs in white and blue backed units cannot be swapped because they are a different shape. So if the M5 cluster has the same colour back as yours you can break off the plastic cage with a screwdriver and swap the coding plug. Early grey back units don't have a coding plug.