Hopkins Multi-Tow 7 Blade & 4 Flat OEM Harness

The Hopkins Multi-Tow 7 Blade & 4 Flat OEM Harness is a vehicle-side trailer wiring connector designed to let one vehicle tow different types of trailers without needing adapters.

Here’s a clear breakdown of what it does and how it works:

🔧 Main Function

It combines two trailer connector types into one unit:

• 7-blade (round RV-style) connector
• 4-flat connector

This means you can plug in either type of trailer directly—no separate adapter required.

⚙️ How It Works

• The harness plugs into your vehicle’s factory (OEM) wiring port.
• It routes electrical signals (lights, brakes, power, etc.) to the correct pins for the trailer.
• The dual socket design lets you switch between trailer types instantly

🚗 What Each Connector Does

7-Blade Connector (7-pin)

Used for larger trailers, RVs, or anything with more features:

• Tail/running lights
• Brake lights
• Turn signals
• Electric trailer brakes
• 12V auxiliary power
• Reverse lights
• Ground

4-Flat Connector

Used for smaller trailers:

• Tail lights
• Brake lights
• Turn signals
• Ground

🔌 Key Features

• Multi-Tow design: one connector supports multiple trailer types
• Plug-and-play (OEM fit): no cutting or splicing wires required
• Weatherproof construction: seals and pre-greased terminals resist corrosion
• Durable housing: impact-resistant for long-term use

🧰 Typical Use Case

You’d use this harness if:

• Your truck/SUV already has a factory tow package
• You tow different trailers (e.g., a utility trailer one day, an RV the next)
• You want a clean OEM-style installation instead of adapters hanging off the hitch