AMP Research Wiring Harness Kit

2018–2022 Ram 1500/2500/3500 with Various Engines

Part #: 80-03977-91

Overview

The AMP Research Wiring Harness Kit is a vital component designed specifically for Ram 1500, 2500, and 3500 trucks from 2018 through 2022. This wiring harness is engineered to seamlessly integrate with AMP Research’s POWERSTEP automatic running boards, providing reliable electrical connectivity that activates the running boards as you open and close your truck doors. Ideal for truck owners who want enhanced accessibility without compromising ground clearance or vehicle aesthetics, this harness ensures smooth operation of the electric-powered steps, making entry and exit effortless.

Whether you drive a Ram 1500 with a 3.0L EcoDiesel, 3.6L V6, or 5.7L Hemi engine, or a Ram 2500 or 3500 equipped with powerful 5.7L Hemi, 6.4L 392, or 6.7L Diesel engines, this wiring harness is tailored to fit your vehicle’s electrical system perfectly. It supports the advanced functionality of the POWERSTEP system, enhancing convenience and safety for daily driving and worksite conditions.

Key Features

This wiring harness kit is engineered to deliver dependable performance and ease of installation. Key features include:

• Custom-fit design for 2018–2022 Ram 1500, 2500, and 3500 models with multiple engine options
• Seamless integration with AMP Research POWERSTEP automatic running boards
• Durable wiring and connectors designed to withstand harsh automotive environments
• Plug-and-play installation minimizes vehicle modification and reduces install time
• Ensures reliable electrical connection for automatic extension and retraction of running boards
• Enhances vehicle accessibility without compromising ground clearance or aerodynamics
• Compatible with both gasoline and diesel engine variants
• Engineered to maintain factory electrical system integrity and safety

Construction & Design

The AMP Research Wiring Harness Kit is constructed with high-quality automotive-grade wiring and connectors that resist corrosion, moisture, and vibration. Each component is engineered to meet stringent OEM standards, ensuring long-lasting durability and consistent performance. The harness is designed to fit precisely within the Ram truck’s existing wiring architecture, avoiding interference with other electrical systems or vehicle components.

Its robust design supports the POWERSTEP system’s automatic operation, allowing the running boards to extend smoothly when doors open and retract cleanly when doors close. This design preserves the truck’s sleek profile and maximizes ground clearance, which is essential for off-road capability and everyday driving.

Installation & Fitment

Installation of the AMP Research Wiring Harness Kit is straightforward and intended for professional or experienced DIY installers. The kit features a plug-and-play design that connects directly to the vehicle’s factory wiring without the need for cutting or splicing. This reduces installation time and helps maintain the integrity of the truck’s electrical system.

The harness is specifically engineered to fit the following Ram models and engine configurations:

• 2018 Ram 1500 3.0L EcoDiesel, 3.6L V6, 5.7L Hemi
• 2018 Ram 2500 5.7L Hemi; 2018–2022 Ram 2500 6.4L 392, 6.7L Diesel
• 2018 Ram 3500 5.7L Hemi; 2018–2022 Ram 3500 6.4L 392, 6.7L Diesel
• 2019–2022 Ram 1500 Classic 3.6L V6, 5.7L Hemi

No vehicle modifications are required, and the harness maintains factory warranty compliance when installed correctly.

What's Included

• Complete AMP Research Wiring Harness Kit tailored for Ram 1500/2500/3500 (2018–2022)
• All necessary connectors and terminals for plug-and-play installation
• Detailed installation instructions and wiring diagrams

Ideal For

This wiring harness kit is ideal for Ram truck owners who have or plan to install AMP Research POWERSTEP automatic running boards. It is perfect for those seeking to improve vehicle accessibility, especially for trucks with higher ride heights or for users who frequently enter and exit their vehicle. The kit suits both daily drivers and work trucks, providing a reliable electrical foundation for enhanced convenience and safety.

AMP Research builds rugged, purpose-driven truck and SUV accessories focused on easier access and smarter cargo management. Best known for its PowerStep™ automatic retractable running boards, the lineup also includes BedStep® tailgate access solutions and BedXTender® cargo systems—designed to add everyday usability without sacrificing off-road-ready durability.