CURT 7-Way RV Blade Replacement Harness — 6 ft Male Plug, Color-Coded Wires & Protective Sleeve

The CURT 56601 is a 7-way RV blade replacement harness — a 6-foot male trailer plug with color-coded wires and a protective sleeve built to restore reliable seven-circuit trailer power.

When your trailer's 7-way plug is damaged, corroded, or unreliable, replacing it with a purpose-built harness keeps lights, brakes and auxiliary circuits functioning safely. The CURT 56601 is designed specifically for the trailer side of a standard 7-way RV blade connection and provides dedicated conductors for tail lights, turn signals, brake lights, electric trailer brakes, reverse lights, a 12-volt feed, and chassis ground. Built for compatibility and straightforward installation, it’s a practical replacement component for travel trailers and many towing setups.

How does this harness restore trailer electrical functions?

The harness supplies seven separate circuits through a standard male 7-way blade plug, re-establishing signals and power between towing vehicle and trailer. Each circuit follows conventional RV wiring roles so your trailer’s lights and brake systems respond as intended when connected.

• Seven-pin male blade plug made for trailer-side installation.
• Separate conductor for electric trailer brakes and brake lights.
• 12V auxiliary feed and reverse-light circuit included.
• Ground return conductor for secure chassis bonding.

Is installation difficult for a DIYer working on a travel trailer?

Installation is straightforward for anyone comfortable with basic wire splicing and wiring harness swaps. The CURT 56601 uses color-coded conductors to match standard trailer wiring schemes, and the 6-foot cable length gives extra reach for many vehicle-trailer arrangements.

• Color-coded wires to simplify matching and splicing.
• 6-foot lead provides clearance and flexibility during routing.
• Protective plastic sleeve shields splices from abrasion and weather.
• Designed to be interchangeable with other 7-way RV connectors.

Will this harness fit my trailer and work with other 7-way plugs?

The 7-way blade format is one of the common RV standards, and CURT designed this harness to be interchangeable with other 7-way RV connectors. Confirm your trailer uses a standard 7-pin blade configuration on the trailer end; the CURT 56601 is a male plug intended to replace the trailer-side connector.

• Standard 7-way RV blade configuration for wide compatibility.
• Male trailer-end plug — replace or upgrade existing trailer plug.
• Works with typical towing vehicle 7-pin sockets when properly matched.
• Best used where wiring follows conventional RV color codes.

How does the harness hold up to road and weather conditions?

The cable includes a protective plastic sleeve around the conductors and splices to help resist abrasion and moisture exposure. While not a sealed assembly, the sleeve and durable materials offer improved longevity compared with bare splices or frayed cords.

• Plastic protective sleeve reduces wear from chafing and elements.
• Durable connector shell designed for towing environments.
• Color-coded conductors reduce rework and potential faulty connections.
• Recommended to seal splices with heat-shrink or dielectric grease for extra protection.

Who is this for: The CURT 56601 harness is meant for RV owners, travel-trailer DIYers, and service technicians who need a reliable replacement trailer-side 7-way plug. It’s suitable for restoring complete seven-circuit functionality on travel trailers that use a standard blade-style 7-pin connector and for anyone seeking an interchangeable, color-coded harness with a 6-foot lead and added abrasion protection.