Holden Viva 2005 Steering wheel control wires
To connect the learning steering wheel control functions of a new audio unit like a Sony, Clarion or Kenwood, you will need to manually hardwire the steering wheel control wires as follows..
SWC 1 ---- connect to Black wire with white trace
SWC GND ---- connect to Blue wire
You can then run the SWC programming procedure as per the user manual instructions included with your new audio unit.