CURT Custom Wiring provides everything you need to connect your vehicle’s electrical system to a trailer. With plug-and-play connectors, a custom wiring harness easily integrates with your vehicle taillights to provide a standard trailer wiring connector, typically in the form of a 4-way flat.
This custom wiring harness features a vehicle-specific design to perfectly fit certain years of the Ram ProMaster 1500, 2500, and 3500. It uses OEM-compatible connectors to “T” into the vehicle’s taillight assembly and provides a standard 4-way flat output to power the taillights, brake lights, and turn signals on your trailer. This custom wiring harness comes with a rubber dust cover. This cover keeps the connection points clean and well protected when the connector is not in use.
• Plugs into vehicle taillight assembly to provide a 4-way flat socket
• Simple plug-and-play design eliminates the need for cutting or splicing
• 4-way flat output connects taillights, brake lights, and turn signals
• Equipped with taillight converter for vehicle-trailer compatibility
• Constructed with SMT circuitry for better performance and durability
• Dust cover included to keep connector clean when not in use
• Vehicle battery connection required
• Includes fuse holder, battery connection wiring, and other necessary wiring components
Compatible Vehicles
2014-2024 Ram ProMaster 3500
2014-2024 Ram ProMaster 2500
2014-2024 Ram ProMaster 1500
Before You Order
Confirm the ProMaster series and year fall within the listed 2014-2024 applications and check that your trailer uses a 4-way flat connection.
Frequently Asked Questions
What connector does CURT 56478 provide?
It provides a standard 4-way flat trailer wiring output.
Which ProMaster years are listed?
The excerpt lists 2014-2024 Ram ProMaster 1500, 2500, and 3500.
