1997 Toyota 4Runner Trailer Wiring | etrailer Lowest Price Trailer Wiring Guarantee. Installation instructions and lifetime expert support on all purchases of 1997 Toyota 4Runner Trailer Wiring. Order online at etrailer or call 800-298-8924. 1997 Toyota 4Runner Hitch Wiring | Harnesses, Adapters Toyota 4Runner 1997, T-One Connector with Converter by Tekonsha®. One-year warranty. 3 Wire System. Wire up your tow vehicle and trailer with whatever it takes to get your trailer lights on, the electric brakes slowing down, and the..