thanks paul h ,re:c3 speedo cluster,u need to remove the long plastic bar about 7inches long which is over the steering,just push it forward each side to unclip.followed ur instructions no probs,{my advice} is if u replace speedo cluster get one first for ur model do not disconnect battery as this will give an engine warning on dash,take off connecting block back of speedo mother board and connect new speedo cluster,put everthing back u will be ok ,u cannot replace led lights.let the computer lads on the web sort it out 4 u. i cud not get a replacement cluster from a good breakers yard anywhere so i bit the bullet and had to buy new £560, fitted it myself,all this because a led light had blown on the speedo arm cud not see what speed i was doing at night the led lights are about 2mm square very small.labour wud have been about £200 to take out n fit.the cluster is only a display of lights. the info comes from ur onboard computer. my model is c3 2011