Honda CR-V Trailer Wiring | etrailer Curt T-Connector Vehicle Wiring Harness Installation - 2019 Honda CR-V. Rob: Rob here at etrailer. Today, you're going to be taking a look at the Curt T-Connector Vehicle Wiring Harness with a 4 Pole Flat Trailer Connector on our 2019 Honda CRV, our wiring is going to provide us with a four pole flat trailer connector. Amazon: honda crv trailer wiring harness CURT 56158 Vehicle-Side Custom 4-Pin Trailer Wiring Harness for Select Honda CR-V. 4.3 out of 5 stars 255. $36 $ 36. 93. Get it as soon as Tue, Jun 18. FREE Shipping by Amazon. More Buying Choices $31 (18 used & new offers) CURT 55336 Vehicle-Side Custom 4-Pin Trailer Wiring Harness for Select Honda, Acura, Isuzu Vehicles.