Recommended Hitch and Wiring Harness for a 2025 Mazda CX-90
Updated 12/15/2025 | Published 10/22/2024
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Question:
What parts do I need to tow a small trailer with a 2025 Mazda CX-90. Thank you!
asked by: Hunter
Expert Reply:
Hey Hunter congrats on the new vehicle! To tow a small trailer with your 2025 Mazda CX-90 you're going to need a hitch, a wiring harness, a couple of mounting brackets, and a ball mount kit.
The best hitch for your CX-90 is going to be the Curt item # C25FV. This hitch is custom fit and bolts to your Mazda with included hardware. It is a class III hitch with a 2" receiver that has a 5,000 lbs towing capacity and a 500 lbs maximum tongue weight. I really like this hitch because the entire crossbar mounts behind the rear bumper leaving only the 2" receiver exposed. This not only looks better it helps with ground clearance.
For a wiring harness, I recommend the Curt T-Connector Vehicle Wiring Harness item # C24ZV. This custom-fit T-connector plugs into your Mazda's wiring harness, which is located behind the driver's-side tail light. It will provide you with a 4-way connector that controls your trailer's lighting functions.
I recommend using the No-Drill Mount Bracket item # 18136 and the item # C42CR to secure the 4-way connector to your hitch. This will put it in an easy to reach spot and prevent the risk of it falling onto the road.
To round out your towing setup, I recommend the Curt Towing Starter Kit for 2" Hitches item # C45534. This towing kit will provide you with a 2" ball and a fixed ball mount with a 3/4" rise and 2" drop. It also includes a hitch pin and clip, hitch receiver lock with keys, hitch cover, and a storage case.
I have linked a couple of installation videos below so you can see how to get these parts set up. I have also attached a couple of pictures.
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(click to enlarge)
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Jerred H.
12/15/2025
Hey Hunter, how did your towing setup go with the Curt hitch and wiring harness on your CX-90? Were you able to get everything connected smoothly for your small trailer? Your update could make it easier for the next person with the same vehicle.