In addition to the iPod, PA20-TOY can connect a second audio source to theradio. Connect the second audio source to the RCA jack labeled AUX INPUT.AUX input is enabled by setting the DIP switch #1 (on the side of the interfaceadaptor) to ON position. When radio is in CD mode, AUX input is accessed at CD9-1(except for MP3 navigation radio, see section 5 - 1 for MP3 navigationg radio).Step 8- Perform a test run before installing the radio back into the dash.Step 7- Plug the CB-PA105 cable to the PA20-TOY adaptor box where it is labeled “iPod”.Step 6-b- Set the DIP switch #2, #3 and #4 according to the table in Section 4.Step 1- Remove or eject ALL CDs from the in-dash CD player/changer.Step 3- Plug the round din plug of the CAS-TYi to PA20-TOY interface adapterbox where it is labeled “RADIO”.Step 5-a- Connect the audio output of your auxiliary devices to AUX input jack onthe PA20-TOY adapter box if the additional AUX option is selected by settingthe DIP switch #1 to “ON” position.Step 4- Plug the other end of CAS-TYi cable to the receptor at the back of the radio.(for some of the more recent year models, plug the CAS-TA to the back of radioand connect the CAS-TYi to the other end of the CAS-TA.)2-3 RCA AUX INPUTSECTION 3. CABLE CONNECTIONStep 2- Remove radio from the dash.