I been dealing with this issue. I have an old car - 1994 Honda with a busted casette player. Of course, no Ipod jack on that car.
I first tried an FM modulator, which worked semi-ok at first. Never a very clear sound. Like others said, there really aren't any "blank" frequencies around here, so I was always picking up radio stations. And funny thing - I would drive by cars who were also using an FM modulator set to the exact same station, and I would pick up whatever they was listening to! The unit I had used batteries and never came with a charger of any sort, and it burned right through those batteries (2
AAA). In about 2-3 hours they were dead and had to be replaced. And over time, the FM modulator seem to lose it's power and soon just start shutting itself off all the time.
I got soooo frustated I went and did the "unthinkable" - I paid $220 for a state-of-the-art Kenwood stereo with CD player and Ipod input jack, plus installation. It was the BEST thing I ever did, wish I did it years sooner. I know it's nuts spending money on an old junky car but I was sooo fed up!!!!! Nothing works as well as an input jack, and I am so glad I got one now!
If the OP intends to keep the car awhile, it may be worth it to cough up the dough and get a new stereo. I have NO regrets!
