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Gauges working ok now using pins 86 and 94 Thanks again

You've answered the question regarding pins 86 & 94 Thanks Adam

The ECU is: G4X N350x , engine VQ350DE. No wiring instructions supplied with the harness, you just have to specify which ECU they need to make the harness for.

That would explain it, Should the exsisting harness CAN flylead be connected to pins #86 CAN2 L and #94 CAN2 H at the ECU, and if not, do I just splice into these wires for the gauges ?

I have the Speedhut CAN-bus OBDII tacho and their water temperature gauges and a 'Wiring Specialities' engine harness. The harness has an OBDII port and a CAN H and CAN L flylead. Does anyone know if there any specific settings that have to be configured for them to connect with the ECU ? I've tried both the OBDII port and the flylead so far without success, voltages at both are 3.3v h and 1.8v low, selected ISO 15765 'on' CAN2, Mode is 350z CAN1 on the ECU is setup for two Link CAN Lambda's and a Strada dash, they work ok Thanks

Indeed it was, didn't think that I could go wrong with 4 wires... now dash is working ok. I have the dash 14 pin plug with obd connector, I previously contacted AiM to see if was ok to splice into this and yes ok and no need for the spare wire of the three into the connector ...Black ,Blue, White. Turns out that the Black wire is CAN L, not the Blue as I'd used Thanks for your help Adam

Partially Fixed! I now have both CAN-Lambda's setup. While waiting for some new connectors to land, I worked through the video that KENJAMIN posted (thanks btw). Although the dash resistor was set to be enabled, it doesn't appear to be working so I've disconnected the dash and terminated that end with a 120ohm resistor. The next question is how can I connect the Strada MSX dash?

Thanks, I'll update on Monday, hopefully the new connectors have arrived by then

I have ordered 2 new 4 way Deutsch connectors

OK, thanks. That wasn't set to Link-CAN, now searches for modules but nothing found GJ350z.pclx

Yes that's confirmed at DTM plug and rear of CAN to PCB connector: High 3.3 Low 1.9 Voltage with dash and one CAN-Lambda connected : High 2.69 Low 2.67 The lambda sensor is heating up ok