How does a radio transmitter work?

Left speaker doesn't work when I use a radio transmitter?

• All of the speakers work when I have the radio on, but when I use a transmitter for my ipod, the left speaker stops working. I tried using another cord, and the left side worked again, but the right side didn't. Is it my ipod or car being picky with the cords, or is it the transmitter? Thanks :)

• Answer:

  you need to buy good cords or the plug in is worn out in the i pod.try someone elses i pod with the cord thats giving you crap and if it dose the same thing its the cord if it don't its the plug in your i pod.and if you have a cheap fm transmitter this can give you head akes,you get what you pay for go to eBay then car audio then head units and buy the right head unit for the job without any fm transmitter.there cheap now that the mp3 and i pod is around.