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If it's the same as the Breva 1100 (off the top of my head):Temp display sensor - dashIntake air temp (IAT) - top of under tankEngine temp (ETS) - top of right cylinderI've never seen an ambient temp display use the intake air temp because it would be wildly inaccurate due to engine heat.
I'm pretty sure it's cable tied up on the bracketry that holds the dash. I had one apart last week so I should remember but can't!
The temp display on my Norge shows the same high level of accuracy and consistency as the mileage display. It's only reliable when the bike is sitting still, preferably not running, and in the shade. Sorta like the broken clock, it's accurate at least twice a day (once, for you military types).