How to make timer activated after 321 go, no at the same time?

I want my timer to activate after my countdown script has hit 1. Right now the timer activates at the same time as my 3 2 1 go script since they are two seperate Java Scripts, how do I combine them so that it goes 3 2 1 and then the timer kicks in?

FYI this is a racing game.

My CountDown script to start game 3 2 1 go!

var guiCountDown : GUIText; var countMax : int; private var countDown : int; function Start () { guiCountDown.enabled=true; GameStart();

}

function Update () {

}

function GameStart() { var car = gameObject.Find("F1Car"); var drivingScript = car.GetComponent("CarControlScript"); drivingScript.enabled=false;

 for (countDown = countMax; countDown>0;countDown--){
     guiCountDown.text = countDown.ToString();
     yield WaitForSeconds(1);
 }
 guiCountDown.enabled=false;
 drivingScript.enabled=true;

}

My Timer script

var timer : float = 60;

function Update () { timer -= Time.deltaTime; if(timer <- 0) { timer = 0; Application.LoadLevel("TooSlowScene"); //Does something after reaching 0 } } function OnGUI() { GUI.Box(new Rect(50, 50, 50, 20),"" + timer.ToString("0")); }

 if (guiCountDown.enabled == false){
     timer -= Time.deltaTime;
 }