Amazon, has keys for cheap and then hardware store like said. Lucky you have 1 key, Just put working key in ignition turn to the on position without cranking, wait till security light stops flashing (2-5 seconds) turn off remove key. Put new key in within 15 seconds turn to the on position, wait for security light to turn off, about same time and it is done. If you have no keys like i did, you have to pay the man