Car wiring diagrams: Fj Cruiser Trailer Wiring Wiring Diagram, wiring diagram, wire wiring harness, schematic circuit diagram, wiring diagran, wireing diagram, wirring diagram, wiring daigram, wiring diagrams. OK, so I got the factory receiver installed took no time at all, very easy. But I m totall stumped about the wiring. I bought part number .Make installing a trailer wiring harness on your Toyota FJ Cruiser as easy as possible with a custom fit wiring harness from Draw Tite, Curt, Pollak, Tow Ready, Bosal, or Hopkins. Today on our Toyota FJ Cruiser, we re going to show you to install the Tekonsha T Vehicle .This wiring diagram manual has been prepared to provide information on the electrical system of the FJ. CRUISER. Applicable models GSJ, Series..