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Discussion Starter #1 (Edited)
My car is Versa 2017 sv
I recently purchased a new radio system (including video screen) to my car, on the new radio there are key1, key2 and GND wires (wireman said that these are related to steering wheel controls), but I can not identify the wires of my steerig wheel controls on the car side to make tge controls work, any help?
 

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I'm not the knowledgeable one to really answer this, but so you have some info to start with.

If your 2017 is like the 2015-16 with Base Audio or Mid Level Audio head units, the Bluetooth is not built into the factory head unit, so the signal from the steering wheel talk/hang up switch, isn't going to the head unit. It goes to an external Bluetooth module. On mine it's mounted passenger side of the trunk.

There is an aftermarket jumper connector PAC BT-SWC-NI1 (Bluetooth SWC Retention Harness for Select Nissan Vehicles.)

The jumper goes on the end of the External Bluetooth module 32 pin wire connector and the module is left unplugged.
 

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My 2015 Versa SV had the Mid Level Audio. So it was in between the Base Audio and the Display Color Audio. The steering wheel buttons that control Volume, Source and the up/down toggle already ran to the head unit.
It was the Talk/HangUp switch that did not go to the head unit but to the trunk mounted Bluetooth module. The Microphone also goes to the External Bluetooth module.

The Display Color Audio and the Navigation Audio have the Bluetooth built in and do not use an external Bluetooth module. So all steering wheel signals and the microphone should be in the headunit harness.
 
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