I know this thread is a little old, but I thought I would still post this here since I think it might be helpful.

I ran across this site last night while trying to find an online service manual or something with details about the Sirius antenna connector and it's location on my '07 Expy (no tuner installed).

Anyway, here is a list of quick reference guides for SSV (Special Service Vehicle) modifiers (like when a police dept gets a new Interceptor and needs to add radios, lights, etc.).

Quick Reference Guides for Towing Camper Loading for Ford, Lincoln and Mercury Vehicles

Specifically, here's the list of modifiers guides for the Expedition (2007-2011):
2007/2008 Expedition Modifier Guide

HTH!
SickPup404