It also provides the opportunity to use a brake controller for heavier trailers/RVs if desired. ![]() They made 7-pin to 4-pin adapters, so there is no issue there. I just used the OEM Hyundai wiring harness. I purchased Hyundai's 7-pin trailer wiring harness (part # S8F67 AC800) and created a video of the entire installation process. The information I could find was very limited and fragmented, so I thought I would document this for others. I hope this is helpful and if you have questions, please let me know. At this time, the installation video just shows the actual harness installation and not the brake control installation. They make 7-pin to 4-pin adapters, so there is no issue there. The wiring process for the previous years is different. This installation video is for the 2023 model year ONLY. The 7-pin harness they provide has an additional 2 fuses built-in. They were clear that there is no 4-pin harness available at this moment because of the issues they are experiencing with the 2020 - 22 model years. ![]() I called Hyundai customer support and they provided a part number. My local dealer gave the same BS that there isn't a harness and that I should have UHaul install something. Since all 2023 Palisades come pre-wired for a trailer harness, I felt an OEM wiring harness is the safest and best route. With a full LED lighting system, splicing in a wiring harness will throw codes because the resistance changes when adding in new wires. As many on this forum have discovered, there are mixed messages and a ton of frustration. I purchased a 2023 Hyundai Palisade Caligraphy and I wanted to put a trailer hitch on it.
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