20-pin Subaru/Nissan Headunit/Radio Wiring Harness with Steering Wheel Switch wires Upgraded version of the Metra 70-7552 Includes pins to connect a steering wheel control interface module. (Subaru Labels these Pins 4,13,14) (Nissan Labels these Pins 6,15,16) Includes Pin 19. (Pin 19 connects to the Vehicle Speed Sensor signal on many Subaru vehicles) Dedicated ground and +12 Volt Accessory wires soldered in to power a steering wheel control interface module. For more information see http://www.autoharnesshouse.com/AHH-70-7552.html