How to Test Trailer Wiring Converter Box
Updated 01/19/2016 | Published 01/18/2016
Question:
Have a 1994 Toyota Pickup. Trailer is 2003 Fleetwood pop-up. Hauled it home with 2003 Tundra, all lights worked fine. Hooked it up to my truck, all running lights work but no t/s or brake lights. My test light works at the rear of trailer with t/s and brake. Put bulb in and lights blink. Turn off blinker and retry, will not work. Re did my ground still inop. Ran a ground wire fro neg side of battery to harness, still, no lights. Is it possible the converter is bad?
asked by: Mike
Expert Reply:
There is a possibility that your trailer light converter has gone bad. Testing it is pretty easy.
What you will want to do is test the wires going into the box of the converter box for voltage with a circuit tester like the # PTW2993 to see if there is voltage going into the box when the taillight functions of your vehicle are applied, and then test the output side of the box to see if the current is making it through the converter. If not then the problem is that the converter box has shorted itself out and would need to be replaced.
Before you replace it you will want to inspect the wiring of your trailer to see if you can find anything that would cause the box to short out like corrosion or cut/exposed wiring. These boxes don't usually go out unless there is a short on the trailer that takes it out.
If there isn't input voltage for the converter then the problem is the wiring of the wiring kit. You will need to check to make sure it's making a solid connection to the correct circuits.
Featured Help Information
Miscellaneous Media
Continue Researching
- Search Results: chrysler pacifica
- Shop: Trailer Wiring
- Shop: Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector
- Shop: Vehicle Tow Bar Wiring
- Search Results: curt trailer wiring
- Shop: Suspension Enhancement
- Shop: Trailer Hitch
- Search Results: trailer hitch
- Video: DIY 2019 Audi A5 Installation for the Curt Trailer Hitch Receiver
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Shop: Inno Aero Roof Rack for Naked Roofs - Aluminum - Black - Qty 2
- Shop: Towing Mirrors
- Shop: Vehicle Tow Bar Brake System
- Shop: Roof Rack
- Shop: Curt Trailer Hitch Receiver - Custom Fit - Class I - 1-1/4"
- Shop: Curt Mounting Bracket for 4-Pole Flat Trailer Connector
- Shop: etrailer Anti-Rattle Hitch Collar for 2" Hitch Receivers
- Shop: Draw-Tite QSP Trailer Hitch Silencer and Cover for 2" Hitch Receivers
- Video: Curt T-Connector Vehicle Wiring Harness Installation - 2022 Chrysler Pacifica
- Q&A: Will My Trailer Wiring Switch Over From My 2018 Chrysler Pacifica to My 2022 Pacifica?
- Q&A: Recommended Trailer Hitch Receiver for 2024 Audi A4 Allroad
- Q&A: Hitch Recommendation for 2017 Audi A4 Allroad for Towing 960 lb Travel Trailer
- Q&A: Hitch Recommendation for Towing a Jet Ski Trailer on a 2017 Honda Pilot
- Video: Curt Powered Tail Light Converter Set Up - 2021 Audi Q7
- Video: How to Install: EcoHitch Hidden Trailer Hitch Receiver on your 2014 Audi A4
- Video: Mount: Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector on a 2008 Audi Q7
- Video: Curt Powered Tail Light Converter Installation - 2014 Volkswagen Jetta SportWagen
- Video: Installation: Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector on a 2011 Audi A4
- Q&A: Troubleshooting No Running Lights When Hooked Up to U-Haul Trailer
- Search Results: trailer hitch wiring
on Custom Fit Vehicle Wiring
