Trailer Light Turn Signal Does Not Work With Curt C55774 7-Way
Question:
Trailer lighting. I drive a 2015 jeep grand cherokee with the factory tow package activated. I bought the CURT T connector which has the 4 and 7 way. Only the left turn signal for the lights do not work. Right signal works. Running lights work. What can I do to fix the issue?
asked by: Brandon
Expert Reply:
Thank you very much for your purchase from etrailer of the Curt T-Connector Vehicle Wiring Harness - 7-Way and 4-Pole Flat Connectors # C55774 for your 2015 Jeep Grand Cherokee with the factory tow package. There are a number of troubleshooting steps you can take to try and find the issue since your trailer's turn light signal is not working.
in order to determine the specific problem you will need to purchase a circuit tester if you do not have one - the very handy Cordless Circuit Tester # PTW2979 - and test the connector on your vehicle after disconnecting it from your trailer. Check the wiring going into your harness from the tow package plug to see if those wires are carrying the correct signals, if not then the issue is with the Jeep wiring.
If the signals going to your harness are okay, which I suspect is likely, you'll need to test the signals coming out of the harness, and if they are correct then your issue is likely going to be with the trailer side wiring. You will want to look for the wire going to the turn signal light that may be pinched or otherwise damaged and fix accordingly.
I have added links below to a pair of help articles on trailer wiring, including a troubleshooting guide for you to take a look at, which I recommend doing. Additionally, to help prevent any type of corrosion in your connector, and increase its durability and lifespan I highly recommend using Dielectric Grease for Electrical Connectors # 11755.
Products Referenced in This Question
Dielectric Grease for Electrical Connectors, 2 oz.
- Accessories and Parts
- Trailer Wiring
- Wiring
- Dielectric Grease
- LubriMatic
more information >
Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Pole Flat Connectors
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- Custom Fit
- 4 Flat
- 7 Round - Blade
- CURT
more information >
Product Page this Question was Asked From
Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Converter
- Custom Fit
- 4 Flat
- CURT
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Q&A: Installation Instructions for Curt # C55260 Trailer Wiring Harness on 1996 Jeep Grand Cherokee
- Q&A: Factory Connector Location to Install Trailer Wiring on 1997 Jeep Grand Cherokee w/Tow Package
- Q&A: Trailer Wiring Recommendation for a 1996 Jeep Grand Cherokee Limited
- Q&A: Cant Find All of the Connection to Install Curt Trailer Wiring Harness on 1996 Jeep Grand Cherokee
- Q&A: Curt Trailer Wiring Harness Installation on a 1997 Jeep Grand Cherokee with Factory Tow Package
- Q&A: How to Tell if Trailer has a BT8 or BTR Spindle Installed
- Q&A: What Is the Difference Between a BTR and BT8 Spindle
- Article: Using a Portable Generator on RV
- Article: Trailer Wiring Diagrams
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
- Article: Brake Controller Installation: Starting from Scratch
- Article: My Trailer Hitch Doesn't Fit
- Article: Troubleshooting 4 and 5-Way Wiring Installations