i bought a new head unit for my astra mk4 the other week its a sony cdx-gt540ui.
i wanted to get the steering wheel controls to work so i bought the correct leads that were needed according to a previous thread on here.
i connected it up, followed the instructions started it up and nothing. everything works fine apart from the date when the cd player is on and the steering controls.
the lights show up on the controls but when i press them nothing happens, its really annoying me as i like using the controls. what do i need to do to get these working?
thanks in advance