Start with a light turned off.

This should be a simple question. I have an object with a light as a component. I would like that when the game starts that the light is initially turned off, until the object is selected(via OnMouseDown). Since I had gotten the light on the object to toggle successfully when clicked I figured I could use the same code but place it in the start function. When I do this as I have done so below the light remains on. Any suggestions how to get the desired output?

 using UnityEngine;
 using System.Collections;
 
 public class Toggle_Light_TEST : MonoBehaviour {
 
     void start(){
         this.light.enabled = !this.light.enabled;
     }
 
     private void OnMouseDown(){
             this.light.enabled = !this.light.enabled;
     }
 }