Install Guide - 5R55S, 5R55W & 5R55N - Ford (Automatic Install Guide - 5R55S, 5R55W & 5R55N - Ford (Automatic Transmission) Install Guide- 5R55S & 5R55W (300 KB) YOUR WARRANTY DEPENDS ON YOUR ADHERENCE TO THESE GUIDELINES. READ THIS ENTIRE DOCUMENT BEFORE BEGINNING Inspect the transmission wiring harness for damaged wires or connectors. Verify proper function of the entire electrical system Free Wiring Diagrams - No Joke - FreeAutoMechanic Just submit a request for the wiring diagram you want (ex. "Need wiring diagram for charging system") We will provide you with the basic free wiring diagrams in an email that can be viewed, saved or printed for future use. Automotive basic wiring diagrams are available free for domestic and Asian vehicles.