29' Boat Trailer Wiring Harness 18-24' | 250-022704

29' Boat Trailer Wiring Harness – Flat 4-Pin Plug | 250-022704

The EZ Loader 29' boat trailer wiring harness, part number 250-022704, is an OEM replacement harness with a flat 4-pin towing connector for compatible boat trailer lighting systems. This longer harness provides five additional feet of nominal wiring length compared with the 24-foot version, making it an option for trailer configurations requiring an extended wiring route. It is listed for certain 18–24-foot trailer applications, but actual compatibility must be confirmed using the original harness part number, connector configuration, and required wiring length.

Features and Benefits

• Genuine EZ Loader OEM replacement wiring harness.
• 29-foot nominal harness length for compatible extended wiring routes.
• Flat 4-pin towing connector.
• Designed for compatible boat trailer lighting applications.
• Replacement option for damaged, corroded, or deteriorated trailer wiring.
• Factory part number 250-022704 for accurate identification.

Product Details

When to Choose the 29' Wiring Harness

This 29-foot harness is intended for compatible EZ Loader trailer configurations requiring a longer wiring path from the tow vehicle connection to the trailer lighting system. It may be appropriate when the original wiring route requires more length than the 24-foot harness provides.

The correct harness length depends on the trailer frame configuration, wiring route, tongue length, and lighting connections. A longer harness should not be selected based solely on boat length.

Before ordering, verify:

• The original EZ Loader harness part number, if available.
• The required wiring length along the actual trailer routing path.
• The flat 4-pin towing connector configuration.
• Existing lighting connections and wiring layout.
• The trailer VIN, model, and approximate manufacturing year.

Important: A flat 4-pin connector generally supports basic trailer lighting functions. Do not assume this harness includes the additional electrical circuits required for electric brakes, reverse-lockout solenoids, or other auxiliary functions.

Need a Shorter Wiring Harness?

If your trailer requires a shorter wiring run, consider the EZ Loader 24' Boat Trailer Wiring Harness, part number 250-022703, featuring a flat 4-pin plug.

View the 24' Wiring Harness – Part 250-022703

The 24-foot version is five feet shorter than this harness. Confirm the original part number and trailer wiring requirements before choosing either replacement.

Independent EZ Loader Parts Dealer Notice

EZLoaderParts411.com is an EZ Loader OEM replacement parts supplier owned and operated by 411MarineCom, Inc. and the 411Marine family, serving customers since 1998 from Hardeeville, South Carolina.

411MarineCom is a high-volume independent EZ Loader trailer dealer and direct-to-factory source for new EZ Loader marine boat trailers, OEM replacement parts, and fitment support.

We are a dealer resource, not the manufacturer. Our team helps previous trailer customers and new customers identify the correct EZ Loader parts using trailer VIN details, photos, measurements, real trailer comparisons, hands-on parts experience, publicly available resources, our websites, and direct customer conversations whenever possible.