I have not tried the aux inppt yet but from what I understand you push the "cd 6" button to get to the aux input. Will update with pic soon! update: Still have not had chance to screw in the adaptor, was getting dark as install was getting finished and have been too busy to mess with it more so hence the electrical tape. Hardest part was cutting a big enough hole in the back of the storage comparment to let the cable from the aux input cable run into the adaptor.