External object collisions?

Hello. I know how to make it so that a function happens when the object that a collision script (like the one below) is attached to collides with another object, but is there a way to make a script that references another object for both objects? For example, the script is attached to object A and it says something like "When object B enters the trigger of an object with the tag “C” object B = destroyed)? Thanks.

function OnTriggerEnter (other : Collider) {
    if (other.gameObject.CompareTag ("Enemy")) {
       Stats.Life -=1;
       Player.enabled = false;
       Light.enabled = false;
       Invoke("LightsOn", Timer);
      };

So you want object A to detect when object B collides with object C?

Yes.

You can’t “listen” for collisions between two other objects but you can script one of the colliding objects to send a message to the third object when the collision happens.

Sorry for the necro. The method I used here was to simply create a class Collision variable and inside your OnCollisionEnter(Collision col) routine make that variable = col.

Easy way to expose the information.