Running Lights Not Working With Reese Trailer Connector Adapter w/ LED Circuit Tester # 78118
Question:
I have a 2013 ford F150 with a factory install trailer wireharness that has the 7 pole and 4 pole outlets on the back. I recently purchased a boat trailer that uses a 5 pole connector. Since the 5 pole connector needs an adaptor I went with the Reese tow adaptor the problem I see is that my brake lights work, right and left signals work but my running lights do not work. The LED lights work for the signs and brakes but not the running lights where do I start? I did not think the truck was old enough to have wiring problems.
asked by: Tim
Helpful Expert Reply:
Since you mention that the LED light on the Reese Trailer Connector Adapter, # 78118, isn't illuminating for the tail lights, it sounds like the issue is with the truck but this could be something as simple as dirt or corrosion in the 2013 Ford F-150's 7-way connector.
If the pin looks clean then the issue may very likely be a blown fuse or faulty relay.
If everything checks out to be fine and the running lights on your trailer still aren't functioning properly, please feel free to email me and I will be happy to provide you with additional suggestions to try and locate the issue.
Product Page this Question was Asked From
Reese Trailer Connector Adapter w/ LED Circuit Tester and Dust Cover - 7-Pole to 4-Pole or 5-Pole
- Trailer Wiring
- Wiring Adapters
- Multi-Function Adapter
- 7 Round - Blade
- Plug Only
- 4 Flat
- 5 Flat
- Reese
more information >
Continue Researching
- Video: Trailer Wiring Harness Installation - 2011 Toyota Corolla
- Shop: Trailer Wiring
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Q&A: Wiring Harness Keeps Blowing Fuse Inside Vehicle
- Q&A: Installation of Wiring Harness Keeps Blowing Fuses
- Q&A: Troubleshooting No Power From Converter Box on Reese Wiring Harness on 2002 Toyota Tundra
- Video: Hopkins 7-Way RV Style Trailer Connector w/ LED Test Lights Review
- Shop: Hopkins 7-Way RV to 4-Way Flat Trailer Connector Adapter with LED Test Lights
- Shop: Hopkins 7-Way RV Style Trailer Connector w/ LED Test Lights - Trailer End
- Video: Reese Wiring - Wiring Adapters - 78118 Review
- Q&A: How do the LED Lights Work on Reese Trailer Connector Adapter w/ LED Circuit Tester 78118
- Shop: Reese Trailer Connector Adapter w/ LED Circuit Tester and Dust Cover - 7-Pole to 4-Pole or 5-Pole
- Video: Choosing the Right Trailer Wiring
- Shop: Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector
- Search Results: 90160
- Shop: Trailer Hitch
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End
- Search Results: 25580
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Article: How to Choose the Right Trailer Hitch Class
- Shop: Brake Controller
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Video: Choosing the Right Brake Controller
- Article: Trailer Wiring Diagrams
- Search Results: hitch
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Video: Curt Powered Tail Light Converter Installation - 2023 Kia Telluride
- Article: My Trailer Hitch Doesn't Fit