2013 Toyota Tundra Regular Cab Owners Manual - Page 250
2013 Toyota Tundra Regular Cab Manual
Page 250 highlights
2-5. Driving information Positions for towing hitch receiver Hitch receiver pin hole position: 46.4 in. (1179 mm) Connecting trailer lights Use the wire harness stored in the rear end under the vehicle body. 4 pin connector 4 pin, 7 pin connectors 286