here is what you can use take a rca cable to 3.5 mm cable
buy a fm modulator
then you can wire up the fm modulator to the jensen radio red power and black ground unplug your antenna from radio plug it into fm modulator and then connect antenna of fm modulator into your jensen radio antenna spot . the connect the rca cables to the fm modulator and then other end into the ear phone piece on ipod .
follow the instruction that come with fm modulator
you will have to tune your radio to a station like 88.9 or which ever you pick from the select ones fm mod gives you to hear you ipod .