Oyviny 4-Pin Trailer Wiring Harness for Dodge Ram/Dakota 78" Lead — Plug-and-Play OEM-Style 4-Flat Connector

The Oyviny 4-pin trailer wiring harness 55329 adds a factory-style 4-flat connector to compatible 1995–2003 Dodge Ram and Dakota trucks for plug-and-play towing.

This wiring harness is built specifically for Dodge trucks equipped with the factory tow package, offering a straightforward way to add a standard 4-way trailer plug without cutting or splicing your vehicle’s wiring. It restores essential trailer lighting functions—tail lights, brake lights and turn signals—using a durable ABS 4-pin connector, protected wiring and a dust cover to keep contacts clean. The assembly’s 78-inch length gives convenient routing options while a nylon sleeve shields the cable from abrasion and weather exposure.

Will this harness fit my Dodge Ram or Dakota?

If your truck has the factory tow package, this Oyviny harness is compatible with many 1995–2002 Dodge Ram 1500/2500/3500 and 1995–2003 Dodge Dakota models. The harness is made to mate directly with the OEM tow connector, so fitment is straightforward when the factory socket is present.

• Compatible models: 1995–2001 Ram 1500, 1995–2002 Ram 2500/3500, 1995–2003 Dakota
• Requirement: vehicle must have the factory tow package connector
• Connection type: standard 4-flat (4-pin) trailer plug
• Length: 78-inch cable for flexible routing and mounting

How easy is it to install this trailer wiring harness?

Installation is designed to be simple and fast with a plug-and-play approach: no cutting, splicing or special tools are needed when your truck has the factory tow connector. The pre-molded connector plugs directly into the vehicle harness and the 4-flat socket mounts quickly to a bumper bracket or hitch plate.

• No cutting or splicing—direct OEM-style plug-in installation
• 78-inch lead for routing behind bumper or along frame
• Includes rubber dust cover to protect unused plug from moisture and debris
• Works with standard trailer lighting: tail, brake, and turn signals

What are the construction and durability features?

The Oyviny harness uses a robust ABS 4-pin connector and corrosion-resistant contacts to resist oxidation and maintain reliable electrical contact. The cable bundle is wrapped in a black nylon net sleeve to protect against abrasion, and the connector includes a rubber dust cap to keep water and dirt out when not in use.

• Connector material: high-strength ABS plastic for impact resistance
• Corrosion-resistant flat 4-pin contacts for long-term conductivity
• Nylon net tube shields wires from rubbing and weather damage
• Rubber dust cover prevents exposure when connector is idle

Are there any load or usage limits I should know about?

This harness provides standard 4-way wiring for lights only and should not be used to bypass rated towing equipment. Do not exceed the vehicle lamp load rating or the product’s rating—exceeding either can result in dim lights or electrical faults. For trailers requiring brake controllers or additional power (e.g., electric brakes or auxiliary power), use the appropriate dedicated harness or controller.

• Designed for lighting circuits: tail, brake and turn signals only
• Do not exceed vehicle lamp load rating or harness rating
• For electric brakes or 12V trailer power, use dedicated controllers or harnesses
• Inspect connector and wires regularly for secure contact and wear

Who is this for? The Oyviny 55329 4-pin trailer wiring harness is ideal for Dodge Ram and Dakota owners who already have the factory tow package and want a reliable, OEM-style 4-flat connector for towing trailers with standard lighting. It’s a practical upgrade for do-it-yourself installers, fleet vehicles, or anyone seeking a tidy, protected wiring solution that plugs neatly into existing factory wiring.