[jpjeepguy]

The only way I know to add a aux input is to use Peripheral's CHYX auxiliary adapter. They run around $100 and it will give you two inputs by tricking the radio into thinking it is hooked to a VES system. Do realize that changing from CD to SAT and back will require going through the added VES tab so the mode button will change from CD to SAT to VES and back to CD.

PS The SAT radio will still work fine.