I do not have a digital camera, otherwise I would post the picture. It is easy, locate the ECU box, passenger side behind the engine firewall. The Aux water pump is in front of the ECU box (front is toward the front of the car) it is installed vertically, tubing connections on the bottom. Or snap a picture of the ECU box area and I will circle it for you.

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2010 ML350 Bluetec
2012 Mustang Convertible