What Causes Trailer Wiring Harnesses to Short Out
Question:
I INSTALLED THIS HARNESS IN THE SUMMER AND AFTER THE WINTER THE LEFT BRAKE LIGHT WASNT COMEING THROUGH THE CONVERTOR, SO I HAD TO BUY ANOTHER HARNESS. I HAVE LED LIGHTS ON MY TRAILER WITH ALL NEW WIREING AND IT WORKS FINE ON MY BROTHER-IN-LAWS NEW FORD TRUCK. IT WORKED FINE ALL LAST SUMMER BUT I HAVENT TRIED IT YET THIS YEAR. HOPE THIS WORKS OK THIS YEAR AS IT GETS EXPENSIVE, I DIDNT KNOW THIS HELP POST EXISTED LAST YEAR.
asked by: Gary A
Expert Reply:
Most likely your old harness shorted due to a short on the trailer wiring and that is why it got damaged and needed to be replaced. Since you replaced the wiring of your trailer you should be good now.
Sorry to hear about the problems you had with your trailer wiring, but the good news is the converter box did it's job. It is supposed to short out and act as a fuse in the event of a short on the trailer wiring to prevent the short from damaging your vehicle wiring.
If you have any other questions feel free to email us back!
Product Page this Question was Asked From
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Powered Converter
- Custom Fit
- 4 Flat
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Trailer Wiring
- Video: Review of Curt Custom Fit Vehicle Wiring - Trailer Hitch Wiring - C89KR
- Shop: Curt 4-Way Flat Trailer Connector with Circuit Protected Powered Tail Light Converter
- Shop: Curt Powered Tail Light Converter - 24 Volts
- Search Results: converter box
- Search Results: trailer converter box
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Shop: Curt Mounting Bracket for 4-Pole Flat Trailer Connector
- Q&A: Testing for Proper Voltage on the Brake Output Circuit
- Shop: Trailer Hitch
- Shop: etrailer Trailer Hitch Receiver - Custom Fit - Matte Black Finish - Class III - 2"
- Video: Best 2007 GMC Sierra New Body Hitch Options
- Shop: Global Link Replacement Strike Plate for RV Entry Doors - Steel
- Q&A: Troubleshooting Trailer Brakes Blowing Fuse When Truck Brakes Are Applied
- Article: Trailer Wiring Diagrams
- Article: Troubleshooting 4 and 5-Way Wiring Installations
- Q&A: Do Converter Boxes on Trailer Wiring Harnesses Ever Go Bad
- Shop: Vehicle Tow Bar Wiring
- Video: CargoBuckle Ratchet Straps - Retractable Strap - IMF103745-86 Review
- Q&A: Will 12V Wire at Vehicle End Trailer Connector Be Hot Even When Truck and All Lights Are Off
- Article: Troubleshooting Brake Controller Installations
- Q&A: Should Vehicle Brake Lights Come On when Using Manual Override on Agility Trailer Brake Controller
- Q&A: Diagnosing, Locating and Repairing Trailer Ground Problem
- Article: Wiring Trailer Lights with a 6-Way Plug (It's Easier Than You Think)
- Video: CargoBuckle G3 Retractable Ratchet Tie-Down Straps Review
- Video: Review of CargoBuckle Tie Down Straps - Ratchet Straps - Boat Tie Downs - IMF14086
- Q&A: Troubleshooting Right Turn Signal Not Working on Trailer Taillights
- Video: Hopkins Wiring - Trailer Connectors - HMC20031 Review
- Video: Review of Roadmaster Tow Bar Wiring - Bypasses Vehicle Wiring - RM47ZR