Hey Cory,
According to the manufacturer the Curt T-Connector Vehicle Wiring Harness # C36ZV would be a confirmed fit for all models of the Kia Niro from 2023 to 2024 so this should be a fit. I don't know what harness you purchased previously but this one is designed to connected directly in line with your factory tail light wiring. We haven't had a 2024 Hybrid model in to test ourselves so with both Curt and us having it as a fit you can just go ahead and get it and test it out. If it's... view full answer...
Hey Gregg, thanks for reaching out!
Your 2018 and 2024 Kia Niro models are from 2 different generations so the hitch fitment is different for them.
The hitch I recommend for your 2024 model is the Curt Class III # C77NR because it has a 2" receiver for more versatility. If you let me know what you plan on using the hitch for I'd be happy to make additional recommendations!
Attached is an installation video and a photo of the complete install for you to check out. view full answer...
Although both the Curt # C77NR and # C37BR both look to be identical there is a small difference in the # C77NR that allows it to be compatible with 2022 and 2023 Kia Niro models, whereas the # C37BR is only compatible with 2022 models. view full answer...