I retrofitted an OBC on the weekend and everything went great except I noticed one of the bulbs on the cluster was gone so I went to BMW today picked up a couple of replacement bulbs to fit.
Got home pulled the cluster out fitted the new bulb and put it back in. The cluster working fine but main OBC screen wasn't displaying so took the cluster out again and noticed two of the pins had been squashed on one of the connectors from the cluster. Straightened them back up and reconnected, cluster working but OBC still not, took out a couple more times checking all wires everything fine then reconnecting now suddenly none of the gauges work and the odometer display doesne't work as well as the OBC :(
Basically just went from bad to worse and wished I had just left the damn bulb alone :(
Checked and replaced all fuses but still nothing. Power is getting to the OBC and cluster ok because the clock displays and all the other lights on the cluster come up such as airbag, indicators, and dash lights up with headlights on.