flickering lights when player gets near

Hi, I am making a simple horror game in Unity3D and I have no idea how to fix this problem. I have a set of lights on a car, and i want them to flicker and then turn off when a player gets near them. I wrote a very simple script so that when the player enters a trigger they would flicker, but the lights flicker even when the player hasnt entered the trigger. please help

public class FlickeringCarLights : MonoBehaviour {

public Light light1;
public Light light2;
public Light light3;
public Light light4;

public float minTime = 0.05f;
public float maxTime = 1.2f;

private float timer;

private bool trigger = false;


void start ()
{
	
	light1 = light1.GetComponent<Light> ();
	light2 = light2.GetComponent<Light> ();
	light3 = light3.GetComponent<Light> ();
	light4 = light4.GetComponent<Light> ();
	
	timer = Random.Range (minTime, maxTime);
	
	
}

void Update ()
{
	if (trigger = true) {
		timer -= Time.deltaTime;
		if (timer <= 0) {
		
			light1.enabled = !light1.enabled;
			light2.enabled = !light2.enabled;
			light3.enabled = !light3.enabled;
			light4.enabled = !light4.enabled;
		
		}
	}
	
}

void OnTriggerEnter (Collider other)
{

	trigger = true;
		
}

}

start should be Start, so it is not getting called.

No filtering on your OnTrigger, so who knows what’s triggering it; add something like

if(other.tag == "Player")
// do stuff