When it comes to hauling a trailer with your 2019 Ram, having a reliable and functional wiring system is essential. The trailer wiring diagram for your 2019 Ram varies based on the model and trim level, but this article will provide a general overview of the wiring system and what you need to know.
Trailer Wiring Connectors
There are three types of trailer wiring connectors that are commonly used on the 2019 Ram:
| Type | Connector |
|---|---|
| 4-pin | This connector is typically used for small trailers with basic lighting systems. |
| 5-pin | This connector is similar to the 4-pin, but includes an additional wire for reverse lights. |
| 7-pin | This connector is the most common and provides power for all trailer functions, including turn signals, brake lights, and auxiliary power. |
It’s important to make sure you have the correct wiring connector for your trailer and that it matches your Ram’s wiring system.
Wiring System Components
In addition to the wiring connector, there are several components that make up the trailer wiring system on your 2019 Ram:
- Trailer Tow Connector
- Trailer Tow Wiring Harness
- Trailer Tow Relay
- Integrated Trailer Brake Controller
These components work together to provide power and control to your trailer’s lighting and brake systems.
2019 Ram Trailer Wiring Diagram
The specific wiring diagram for your 2019 Ram will depend on your model and trim level. However, here is a general overview of the wiring system:
4-Pin Connector Wiring Diagram
If you have a 4-pin wiring connector, the wiring diagram will look like this:
| Pin 1 | Brown Wire – Tail Lights |
| Pin 2 | Yellow Wire – Left Turn Signal |
| Pin 3 | Green Wire – Right Turn Signal |
| Pin 4 | White Wire – Ground |
This wiring system is designed for basic trailer lighting, without brake or auxiliary power functions.
5-Pin Connector Wiring Diagram
If you have a 5-pin wiring connector, the wiring diagram will look like this:
| Pin 1 | Brown Wire – Tail Lights |
| Pin 2 | Yellow Wire – Left Turn Signal |
| Pin 3 | Green Wire – Right Turn Signal |
| Pin 4 | White Wire – Ground |
| Pin 5 | Blue Wire – Reverse Lights |
This wiring system includes a wire for reverse lights in addition to the basic lighting functions.
7-Pin Connector Wiring Diagram
If you have a 7-pin wiring connector, the wiring diagram will look like this:
| Pin 1 | Brown Wire – Tail Lights |
| Pin 2 | Blue Wire – Electric Brakes |
| Pin 3 | White Wire – Ground |
| Pin 4 | Green Wire – Right Turn Signal/Brake |
| Pin 5 | Yellow Wire – Left Turn Signal/Brake |
| Pin 6 | Red/Purple Wire – Auxiliary Power |
| Pin 7 | Black Wire – Backup Lights |
This wiring system provides power for all common trailer functions, including turn signals, brake lights, and auxiliary power.
FAQ
Q: Can I use a 7-pin connector on a trailer with only 4 or 5 wires?
A: Yes, you can use a 7-pin connector on a trailer with fewer wires. Simply connect the appropriate wires to the matching pins on the connector and leave any unused pins disconnected.
Q: Can I tow a trailer without a wiring system?
A: No, it is not safe or legal to tow a trailer without a functioning wiring system. Without proper lighting and brake controls, you increase your risk of accidents and could be cited for traffic violations.
Q: How do I test my trailer wiring system?
A: You can test your trailer wiring system using a circuit tester or multimeter. Simply connect the tester to each wire in the connector and test for power or ground signals. If any wires are not functioning properly, you may need to replace the wiring harness or repair any damaged connections.
Q: Can I install a trailer brake controller on my 2019 Ram?
A: Yes, many 2019 Ram models come equipped with an integrated trailer brake controller. If your model does not have this feature, you can still install an aftermarket controller for improved trailer control and safety.
Q: What do I do if my trailer lights are not working?
A: If your trailer lights are not working, start by checking the wiring connections and fuses. Make sure the wiring system is properly installed and connected to your Ram. If problems persist, you may need to replace the wiring harness, trailer tow relay, or other components of the system.
