July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!
Module, Glow Plug, 3.0L Diesel: Removal: Removal
WARNING: This page is about a different car, the 2012 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Glow Plug Module & Connectors
Courtesy of CHRYSLER GROUP, LLC
Disconnect the negative battery cable.
Disconnect the two glow plug harness connector (3).