July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!
Removal - Glow Plug Module
WARNING: This page is about a different car, the 2011 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 LLC
Disconnect the negative battery cable.
Disconnect the two glow plug harness connector (3).