Hopkins HM43575 vs. Curt 56225 For 2020 Nissan Frontier
Updated 02/17/2026 | Published 06/14/2024
Products Featured in This Question
Question:
For my 2020 Nissan Frontier SV, looking at the Hopkins HM43575 compared to the Curt C56225. I see that the Curt model has the relay harness and the Hopkins model does not. How do I find out which one my truck would require ?
asked by: Carl F
Expert Reply:
Hi Carl,
The right one will actually depend on if your 2020 Nissan Frontier has the factory 4-way or not. If it does, you'd use the Hopkins # HM43575 as it's simply a replacement for the OEM 4-way.
Otherwise, if you don't have any factory trailer wiring on your Frontier and need to add a wiring harness, you'll go with the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56225.
Robin H.
2/17/2026
Hey Carl, what ended up working for your Frontier—did you go with the Hopkins harness or the Curt option? Knowing which one fit your truck best could really help others sorting out their wiring setup.