I have a 91 civic DX HB. I converted the car from auto trans to manual trans. Changed the D15 engine to a D16z6 with a P28 ECU. The problem that I have is that I changed the 91 dx cluster to an 91 Si cluster, the DX cluster has four connectors in the back of the Cluster and the SI has three. Also the turn signals are not working. Would these two problems be related? Does any one have a wiring diagram pinouts for the cluster?