Navara D40 2014 Steering wheel control wires
Just completed installing a replacement GPS/DVD double DIN head unit in a D40 series 6 Navara with existing factory bluetooth.
Bought the DNA ISO harness part No. AWH3091 and the DNA antenna adapter part No. NI-6
http://www.dnaaudio.com.au/index.php/amfinder
There is no reverse wire at the head unit, so will have to run one from the rear.
The unit purchased had provision to learn the steering wheel controls.
Once the factory unit was removed the information button on the steering wheel no longer operated, this controls the tripmeter and fuel use etc.
At the wiring harness plug (car side) there are three extra wires in the harness in position 6 (pink with two silver bands), 15 (blue with two silver bands) and 16 (white with two silver bands), these are the steering wheel controls.
Position 15 needs to be earthed, this will enable the information button to work again, this is also the common for the steering controls
Position 6 is the volume up and search up return wire.
Position 16 is the volume down and search down return wire.
The return wires both have resistance and will drop the voltage a couple of volts (testing with a meter)