Key in-start, nothing. Security light stays on

I put my key in, turned it to start. Nothing happened. I know to look at the "Security" light. It was on and stayed on. I waited a few minutes for it to go off. When it went off, I could start the car up.

I had a problem (Put resistor from radio shack) when the security light flashed.

Now I'm having the problem with the light staying on. What is the difference when it stays on?

Thank you,
Chris.