What Does Trailer Wiring that Has Voltage on All Pins of the 4-Way Indicate
Updated 04/22/2019 | Published 04/20/2019 >
Question:
When testing my lights for my trailer on my vehicle with a tester the wire coming from my car there are all hot all the time they stay lit, everyone both turn signals and brake, does that mean the T connector is bad ?
asked by: Gary K
Helpful Expert Reply:
If you have a trailer wiring harness that's putting out voltage on all of the pins all of the time it does have an internal problem and need to be replaced. The converter boxes of the wiring harnesses are designed to "sacrifice themselves" in the event of a short to prevent the short from damaging the vehicle wiring too. So first thing to do is fix the short on your trailer wiring. Look for exposed wire that could touch metal and fix as needed before replacing the wiring harness.
Product Page this Question was Asked From
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- Powered Converter
- No Tow Package
- 4 Flat
- Plug and Lead
- Plug-In
- CURT
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Video: Best 2009 Honda Odyssey Trailer Wiring Options
- Q&A: Troubleshooting No Power At The Factory Trailer Plug
- Search Results: battery box strap
- Search Results: emergency kit emergency supplies
- Shop: Roof Rack
- Shop: Trailer Wiring
- Shop: Malone AirFlow2 Roof Rack - Aero Crossbars - Raised Side Rails - Aluminum - 58" Long - Silver
- Shop: Malone FoldAway-5 Kayak, Canoe, and SUP Roof Rack w/ Tie-Downs - J-Style - Folding - Clamp On
- Shop: 7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires
- Q&A: How To Install a Trailer Wiring Harness to a 2011 Toyota RAV4
- Article: Rooftop Cargo Carriers
- Article: My Trailer Hitch Doesn't Fit
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Q&A: Reese Fifth Wheel Rail Kit for 2019 Chevy Silverado 1500 Short Bed
- Q&A: 2022 Chevy Silverado 1500 LTD Correct 5th Wheel Base Rail Kit
- Q&A: How to Fight Against Trailer Hitch Rusting
- Article: Rust Prevention
- Q&A: Choosing Between Tekonsha or Curt Powered Taillight Converter/Wiring Harness for 2020 Honda Odyssey
- Article: How to Choose the Right Trailer Hitch Class
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Routing the Power Wire for a Trailer Wiring Harness


