Ok I am posting this about the anti theft Light on my 2000 Mustang
gt. I want to first thank this websight for helping me out. Every once in a while the car would not start, it would crank fine, strong battery, I finaly noticed the ANTI theft light blinking. I tried every trick, disconecting the battery using a second key every solution posted on this websight. Finaly I saw a suggestion to move the Tilt stearing. As soon as I lowered it, I tried cranking, it started immediately . So I got the car home turned it off. Moved the stering to the top position. The theft light started blinking again. Moved it down No blinking. I 'm sure there is a short or somthing but at least now I know the cause. If anyone knows anything futer pleas post.