Running Lights Not Working on Trailer With New Wiring
Updated 05/22/2017 | Published 05/19/2017
Question:
I just installed new wiring from front to back on trailer. I have great bright brake and turn lights but no running lights. I have tried both plugs on 2017 ram and checked all fuses. I need help
asked by: Joe
Expert Reply:
Start off by making sure you connected the tail/running lights to the appropriate pin on your trailer's 4-Way or 7-Way depending on what kind of connector you have.
For a 4-Way the pin should be the brown colored wire. This will also be the pin that is closest to the female ground connection part. For a 7-Way it will be the pin that is in the 1 o'clock position. Also check the connectors both on your tow vehicle and trailer to make sure there is no corrosion or debris.
Once you have confirmed that this is correct and they are clean you will then want to make sure that your grounds are all clean. You want metal to metal contact both on your tow vehicle and trailer end.
Also make sure to check that all of your wiring connections are still good. Especially at the tail/running lights.
Moving on from there the next step would be to make sure that your Ram is actually sending a signal for the tail/running lights. You can use a Circuit Tester # PTW2992 to test the pin locations (they will be the opposite of what I said will be on the trailer's side).
If your Ram is sending a signal and the wiring on your trailer looks good then you will need to take your trailer to your local shop so that they can physically inspect it.
Product Page this Question was Asked From
Featured Help Information
Miscellaneous Media
Continue Researching
- Search Results: chrysler pacifica
- Shop: Trailer Wiring
- Shop: Vehicle Tow Bar Wiring
- Video: Curt T-Connector Vehicle Wiring Harness Installation - 2022 Chrysler Pacifica
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Q&A: Will My Trailer Wiring Switch Over From My 2018 Chrysler Pacifica to My 2022 Pacifica?
- Shop: Heavy-Duty Magnetic Tow Light Set - Red Incandescent - 30' Harness with 4-Pin Round Plug
- Shop: Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Q&A: Troubleshooting No Running Lights When Hooked Up to U-Haul Trailer
- Shop: Hook Probe Circuit Tester
- Shop: 35 Ft 4-Way Trailer Wiring Harness - Wishbone Style - 42" Ground
- Q&A: Troubleshooting Trailer Wiring Running Light Circuit Not Active Curt Harness 2022 Chrysler Pacifica
- Q&A: Trailer Running Lights Do Not Work but Brake Lights and Turn Signals Do Work
- Q&A: How to Test Trailer Wiring Converter Box
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Search Results: trailer hitch
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Search Results: trailer wiring
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Video: An In-Depth Look at the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: trailer tires and wheels
- Video: An In-Depth Look at the Roadmaster Battery Charge Line Kit for Towed Vehicles
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Shop: Suspension Enhancement
- Shop: Brake Controller
- Video: Curt T-Connector Vehicle Wiring Harness Review C56040
on Automotive Tools
