I have a JDM P11 Primera (USDM G20) with a GTiR motor and ECU. However, the OEM gauge cluster from the centre dash of the Pulsar is there- but it's not connected to anything. The jack to the back of it just hangs out. I doubt that there is an extra harness coming out of the ECU to connect this...although the light in it works.....

I would like to get the gauges working...Can anyone help me out here?

I don't mind hardwiring it into the ECU harness if necessary. I looked at the manual and the wiring diagrams for the gauges...but can't figure out what/where the gauge wires should connect to. I have installed separate (Autometer) mechanical boost and water temp gauges though....Thanks.