How Can I Attach the 4-Flat Wiring to My Trailer Hitch on 2020 Acura RDX?
Updated 09/12/2025 | Published 08/19/2025
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Question:
For the Base SHAWD 2020 acura Rdx hitch wiring harness, do you sell a product that will mount the 4-flat connector to the hitch, rather than have it route under the tailgate and the weatherstrip? The OEM harness routes out through a grommet in the base panel. Thanks
asked by: Tnf
Expert Reply:
Hello Tnf,
For your 2020 Acura RDX you will want to install the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118800, and then to attach the 4 flat to the hitch, you will need a # 18136 no drill mounting bracket and the # C42CR Curt 4-flat. I attached a video so you can see exactly how it works, best part is that you will not have to drill into your new hitch.
What do you plan on using the hitch and wiring for? What hitch did you decide to go with?
(click to enlarge)
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Kate F.
9/12/2025
Hey Tnf, did the T-One Wiring Harness and mounting brackets work out for your Acura RDX? I'm curious to know how everything turned out because it could help others looking to set up their hitch and wiring.