Trailer Hitch and Wiring for 2018 Audi SQ5
Updated 09/26/2025 | Published 05/01/2025
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Question:
Hello, I have a 2018 Audi SQ5 and would like to purchase the tow hitch package. I need all of the wiring as well for the brake lights. Can you also explain the difference between the different stage hitches and what the differences are? I need every component to install it and plug and play.
asked by: Wci W
Expert Reply:
Thanks for reaching out! I have two options for a trailer hitch for your 2018 Audi SQ5. The first is the etrailer # e94CR. This Class III hitch has a 2" receiver and a bolt-on installation. It has a concealed cross tube, so only the receiver will be visible at the rear as seen in the attached photo.
The wiring for a setup with this hitch won't be plug and play (since nobody makes one for the SQ5) but you can use the ZCI Circuit Protected Vehicle Wiring Harness # 119250KIT. This clamps onto your vehicle wiring instead of splicing and will provide you with a 4-way to power your trailer's signal lights. For a ball mount, check out the etrailer # e66PR. This is adjustable so you can have a nice, level setup no matter what you're towing.
The other option is the Stealth Hitches Hidden Trailer Hitch Receiver w/ Towing Kit # 391AUDQ518T. If you prefer a hitch with a removable receiver this is the better choice. When you uninstall the receiver/ball mount this has a completely hidden design.
The Stealth Hitch is Class IV since it has a higher capacity but, both hitches exceed the vehicle towing capacity so there is really nothing to gain from it. This comes with everything you need, including wiring, for a complete installation. The wiring harness is universal so it will require splicing. If you need anything else don't hesitate to reply below.
(click to enlarge)
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on Trailer Hitch
Robin H.
9/26/2025
Hey, did you find the etrailer hitch and wiring harness easy to install on your Audi SQ5? I'm curious to know if the setup worked well for you, as it could help others looking to install a similar towing package.