Hello Colin,
I am Peter Janas from Australia and have the 2017 NX300 Deluxe. I have struggled to find anyone who knows about CAN bus wiring to LED headlights, which my NX has. I am trying to wire in a LED light bar, but cannot find a 'wire' that will control the solid state relay so the light bar goes off when the high beam lights are dipped. Toyota Australia will not talk to my contact, who has a high profile in the auto repair industry. He was told to talk to a CAN bus Engineer. Reading what you have said above, can you help me out with the diagram I need?
Kindest Regards,
Peter Janas