Car Stereos: Iphone through Alpine CDA-7875, alpine cda 7875, alpine head unit

Question
Hi Scott, I have an iphone that would like to play through my Alpine CDA-7875 head unit.  What type if adapter can I plug into the head unit using a mini (headphone) jack from the iphone?  I'm not sure how the aux input in configured without taking the HU out.  In another vehicle I use a mini to rca adapter will this work or is there another connector that is required for this Alpine Head unit?

Thanks for your help!

Answer
Eric,  I looked over the manual for your  head unit, and there does not seem to be any type of input.  The only other option that may be available is an FM modulator.  They used to make an adapter that you could plug your walkman into, and tune your stereo to a certain station and you could hear the walkman.  Today, I think they may have a similar item that gets wired into your cars antenna, and it is a bluetooth receiver.  Then, you can connect to your iphone using bluetooth.  Hope this helps, Scott