Wehere is the closed-lid-sleep sensor on pre-unibody mbp?

[darngooddesign]

I just replaced the bezel on my girl's MBP, pre-unibody, A1260 LED backlit display, and it no longer senses that the lid is closed and goes to sleep. Does anyone know where this sensor is?

 

[alphaod]

It's two magnets where the iSight is.