The above one sucks. I tried it with my stock headunit. It did not play the ipod very loud and if you drive out of your area, the FM frequency may be used and interfere. Obviously it cannot interface with the ipod controls. I sold it and bought a new headunit.
2003 TJ, 33" BFG AT, 2" BL, 2" BDS spring lift, Truck Lite headlights, Homemade sunrider top.