Towing Equipment› Hitches

Curt

CUSTOM WIRING HARNESS (4-WAY FLAT O

$110.19

SKU: C00D 56435

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Curt 56435 is a vehicle-side custom 4-pin trailer wiring harness designed for select Mazda 3 models. This plug-and-play electrical device connects to your vehicle's electric system, providing a standard 4-way flat trailer connector. It uses OEM-compatible connectors that plug directly into the taillight assembly, eliminating the need for cutting or splicing wires.

The harness provides a connection for tail lights, brake lights, and turn signals. It includes a tail light converter to ensure vehicle-trailer compatibility and is constructed with SMT circuitry for enhanced performance and durability. A dust cover is included to protect the connector when not in use, and a vehicle battery connection is required for operation.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandCurt
Part NumberC00D 56435

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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