2015 Honda Pilot Touring Trailer Wiring Troubleshooting
Question:
I have no power for running lights on my 2015 honda pilot touring tow plug. All fuses in engine compartment are fine. Break lights and turn signals work fine. I am not sure what I can be missing at this point. Why would there be no power to running lights only.
asked by: ERIN S
Expert Reply:
Since you have the running lights on your 2015 Honda Pilot, you can isolate the issue to your towing wiring harness or your vehicle. Use a circuit tester like # PTW2993 to test each function on your trailer wiring. If each function works at your trailer connection on your vehicle side, then you know the issue is on the trailer side. If this is the case, check the trailer ground wire connection and the ground connections at your tail lights which is often the mounting hardware. If the function doesn't work on the vehicle side, you have isolated the issue to the vehicle wiring.
Often when one function like this isn't working, the issue is the ground wire connection or a short in that specific wire that matches the function. I recommend first checking the ground wire for a metal to metal connection free of debris or corrosion and checking any harness connections for a bent pin. Then swap out your relays to see if you may have a relay issue. Next probe the individual wires using a circuit tester to trace for power checking every few feet. If you find you have power on some of the wire, then you have found the short and can splice in a new wire at that location.
If you have no power, you will need to use the circuit tester on either side of the fuse location and test for power there. If there is no power at the fuse, that is the reason the fuse is in tact and you still don't have function. You will need to trace that wire probing every few feet to find the short.
Products Referenced in This Question
Product Page this Question was Asked From
T-One Vehicle Wiring Harness for Factory Tow Package - 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
- Shop: Trailer Clearance or Side Marker Light w/ Reflector - Incandescent - Rectangle - Amber Lens
- Shop: Optronics Trailer Clearance or Side Marker Light w/ Reflector - Incandescent - White Base - Red Lens
- Shop: Optronics LED Transit Tail Light - Stop, Tail, Turn - Submersible - 31 Diodes - Red Lens
- Shop: Trailer Clearance or Side Marker Light w/ Reflector - Incandescent - Rectangle - Amber Lens
- Shop: Hopkins Plug-In Simple Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector
- Shop: Trailer Clearance or Side Marker Light w/ Reflex Reflector - Rectangle - Amber Lens - White Base
- Shop: Peterson Clearance or Side Marker Trailer Light w/ Reflector - Incandescent - Oblong - Red Lens
- Q&A: Troubleshooting Wiring Harness on 2015 Honda Pilot
- Search Results: reese replacement parts
- Video: Reese Trailer Connector Adapter with LED Circuit Tester Review
- Video: Reese Wiring - Wiring Adapters - 78118 Review
- Search Results: 90160
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Video: Choosing the Right Trailer Wiring
- Shop: Trailer Hitch
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Search Results: hitch
- Article: Trailer Wiring Diagrams
- Video: Choosing the Right Brake Controller
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Article: How to Choose the Right Trailer Hitch Class
- Shop: Brake Controller
- Search Results: brake controller
- Search Results: 25580
- Video: Curt T-Connector Vehicle Wiring Harness Installation - 2024 Honda Pilot
- Shop: Gooseneck Hitch
- Q&A: What Is An OEM Prep Package And How Do I Know If I Have It
- Article: My Trailer Hitch Doesn't Fit
on Custom Fit Vehicle Wiring
