Core Duo and original Core 2 Duo models (photo 1):Disconnect the two newly-revealed temperature sensor connectors and the fan connector from the logic board. These connectors move up vertically off of the logic board, NOT pulled towards the rear of the case, and can be lifted with gentle pressure from under the cable.

Santa Rosa/Penryn models (photo 2): There is only one temperature sensor connector containing all four wire leads.

Early and Mid 2009 models don't have a separate temperature sensor attached to the heat sink, and thus no cable for it, so nothing is plugged into the temperature sensor connector.