The Wiring Adapter # 3035-P will allow you to simply plug in the Tekonsha Prodigy P2 # 90885 on a 2010 Ford Expedition that came with either a factory 4-way or 7-way. If the truck does not have any of the factory wiring the controller will have to be hard wired in with the Wiring Kit # ETBC7 and a 4-Way # 18252. view full answer...