What is the Difference Between the Tekonsha # 118746 and Curt # C56377 Wiring Harnesses?

Updated 09/23/2021 | Published 09/22/2021

Products Featured in This Question

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

(140)

$73.29

Question:

What is the difference between the Tekonsha # 118746 and the Curt # C56377 wiring harnesses for my 2022 Mazda CX-5?

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Expert Reply:

As far as comparing the Tekonsha T-One Wiring Harness # 118746 to the Curt T-Connector Wiring Harness # C56377, there are more similarities than differences. As far as similarities, both harnesses will provide you with 4-way access on your vehicle to power your trailer's signal lights. Also, both are compatible with 5, 6, and 7-pole wiring adapters and include a hot lead wire that attached to your battery.

For the differences between the two harnesses, the Tekonsha harness runs at a higher maximum amperage (Stop/turn lights: 5 amps per circuit/tail lights: 7.5 amps per circuit) compared to the Curt (stop/turn lights: 3 amps per circuit/tail lights: 6 amps per circuit). Moreover, another difference is that the Curt is constructed using surface-mount technology (SMT) for consistent, reliable performance. This feature maximizes trailer light yield and ensures superior operation in harsh road conditions.

With these differences, I recommend the Tekonsha harness due to its maximum amperage. The increased power potential will allow you to power your trailer more efficiently. If you need assistance with installing the Tekonsha or Curt harness, I went ahead and attached installation videos of both of these options.

expert reply by: Bob C