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I don't suppose anyone knows the location of the ground point for an NB8B ECU?

These references are for the MSM/SE but should be the same:

https://drive.google.com/folderview?id=0B3YbfB30DxW0bEdwS0xSNGVXMzA&usp=sharing
wiring_all.pdf - Figure 15 Ground Distribution Circuit indicates PCM (aka ECU) connects to G5 (at Right Side of Engine Compartment)
electrical_component_locaion.pdf - Page 6 references Figure 1 for G5 (labelled on Figure 1 as the circled "5")

This is the loom on my NB8B, does that help?

Thanks Lokiel