be sure to tuck the microphone cable and connector into the void next to the camera board.
Gently guide the microphone connector and cables through the ±1in long slot at the right of the iSight camera. Once the bezel is properly assembled, gently push the microphone connector and cable into the bezel through that slot.
To remove the optical drive thermal sensor, use the tip of a spudger to lift the center finger of the thermal sensor bracket while applying slight tension to the thermal sensor cable.
If your thermal sensor is stuck to the optical drive, use the flat end of a spudger to pry the thermal sensor bracket off the adhesive securing it to the optical drive.
If the adhesive refuses to stick during reinstallation, apply double-stick tape to the underside of the two flat ears of the thermal sensor bracket.