2008-2019 Toyota Highlander - Curt MFG Trailer Wiring Kit Curt Manufacturing's # 56217 Toyota Highlander Trailer Wiring Kit T-Connector Harnesses are designed to make connecting your trailers wiring a snap. No need to cut or modify your vehicles existing wiring harness, Curt's custom fit T-connector trailer wiring kits will plug right into your existings factory wiring.5/5(2)Price: $37Brand: Curt MFG Toyota Highlander Trailer Wiring | etrailer Guaranteed fit Toyota Highlander Trailer Wiring. Lowest price guaranteed. Thousands of customer trailer wiring reviews, expert tips and recommendation. Lowest price guaranteed, easy online ordering at etrailer or call 800-298-8924.