AMP Research 19-03977-97L PowerStep Replacement Wiring HarnessRAM 1500/2500/3500

Vehicle Fitment

• 2015-2017 RAM 1500 - Regular Cab, Quad Cab, Crew Cab (All Cabs)
• 2016-2017 RAM 2500 - Regular Cab, Quad Cab, Crew Cab, Mega Cab (All Cabs)
• 2016-2017 RAM 3500 - Regular Cab, Quad Cab, Crew Cab, Mega Cab (All Cabs)
• Compatible with AMP Research PowerStep kit 76139-01A and PowerStep Plug-N-Play kit 76239-01A on covered RAM platforms

Fitment Notes

• This is a replacement wiring harness for AMP Research PowerStep electric running boards already installed on the vehicle - it is NOT a complete running board kit
• This harness is RAM platform-specific - the connector configuration is engineered specifically for the covered 2015-2017 RAM 1500 and 2016-2017 RAM 2500/3500 electrical architecture and is not interchangeable with Ford, GM, Toyota, or other brand-specific harnesses
• Will NOT fit RAM Chassis Cab models
• On Regular Cab and Quad Cab applications, the running boards require trimming to fit the shorter cab length - this is a known requirement of the parent kits and applies equally to the harness installation
• RAM 2500 and 3500 HD models equipped with Factory Air Ride Suspension require the Air Tank Relocation Kit (79102-01A) - sold separately - prior to installation
• Verify the series and part number of the AMP Research PowerStep installed on your vehicle before ordering - if unsure, contact AMP Research / RealTruck support before purchasing
• This product is non-returnable and non-refundable unless the part arrives defective - all sales are final
• Drilling is required for installation on the parent kits this harness supports

Features

• OEM-matched replacement wiring harness engineered to restore proper door-triggered deployment and retraction function to AMP Research PowerStep running boards on covered RAM 1500, 2500, and 3500 applications
• RAM-platform-specific connector design integrates directly with the factory door sensor circuit on the covered model years - no generic adapters or splices to the factory system are required beyond what the original installation used
• Restores automatic PowerStep operation: steps deploy when any door opens and retract after a 3-second delay when all doors are closed
• Engineered to AMP Research production specifications for direct replacement of a failed, corroded, or physically damaged original harness
• Supports full PowerStep operation including the integrated LED courtesy lights and anti-pinch motor protection via the original controller

Specifications

• Part Type: Replacement wiring harness
• Application: AMP Research PowerStep and PowerStep Plug-N-Play - RAM 1500/2500/3500 specific
• Compatible Parent Kits: 76139-01A, 76239-01A
• Platform: RAM-specific connector - not universal, not compatible with other makes
• Chassis Cab Fitment: Not compatible
• HD Air Ride Suspension: Requires Air Tank Relocation Kit 79102-01A (sold separately)
• Returns: Non-returnable / non-refundable unless defective

Included Components

• 1x AMP Research replacement wiring harness (RAM platform-specific for 2015-2017 RAM 1500 and 2016-2017 RAM 2500/3500 PowerStep applications)
• Note: Running boards, motors, mounting brackets, OBD-II module, and controllers are NOT included - this is a harness replacement part only

Product Description

The AMP Research 19-03977-97L is the factory-matched replacement wiring harness for AMP Research PowerStep electric running boards installed on the 2015-2017 RAM 1500 and 2016-2017 RAM 2500/3500 - covering all cab styles including Regular, Quad, Crew, and Mega Cab configurations. This harness is the primary wiring component of the 76139-01A PowerStep kit and the 76239-01A Plug-N-Play PowerStep kit on these RAM platforms. When the original harness is compromised by corrosion, road debris damage, or age-related wear, the steps may operate intermittently, fail to respond to door inputs, or stop functioning entirely. Replacing the harness with this OEM-spec part restores full automatic operation - steps deploy when any door is opened and retract approximately 3 seconds after all doors are closed.

The 19-03977-97L uses a RAM-platform-specific connector that integrates directly with the factory door sensor circuit on the covered model years, maintaining the same wiring interface as the original installation. It supports all downstream PowerStep functions, including the integrated LED courtesy lights and the motor's anti-pinch safety system. Important restrictions apply: the harness is not compatible with RAM Chassis Cab configurations, and RAM 2500/3500 HD models with factory air ride suspension require the separately purchased Air Tank Relocation Kit (79102-01A) before the steps and harness can be properly installed.

On Regular Cab and Quad Cab applications, the running boards themselves require trimming to match the shorter cab length - this is a standard requirement carried over from the parent kits and is relevant context for anyone replacing the harness as part of a broader running board reinstallation. Before ordering, confirm the exact AMP Research PowerStep series and part number installed on the vehicle, as AMP Research produces multiple RAM-platform harness variants that are not interchangeable across model years or PowerStep generations. This is a final-sale replacement part - all purchases are non-returnable and non-refundable unless the harness arrives with a confirmed manufacturing defect.