Remote Keyless Entry
 

I have a 99 Mustang, I lost the remote to the keyless entry. I bought a new one, but it didn't come with directions. Does anyone know how to set it? I don't have any other remotes either, just the one I just bought. Thanks

is it a factory keyless entry or aftermarket? go to the dealer if it is factory. aftermarket, find out the name and model number and put it in a search engine. then go from there.

It's factory. I found out you have to cycle the key 8 times in the ignition, then press the 1 button and that's it.