My 2017 Ford F-150 Reads Trailer Module Fault and Turn Signal Faults, and Trailer Lights Don’t Work
Updated 04/06/2024 | Published 06/29/2018
Products Featured in This Question
Question:
My 2017 Ford F-150 keeps reading” trailer module fault” “Turn signal faults”..... and lights don’t work.... but there is power all way back to lights from truck until I connect them then nothing works..... so I plug same trailer into Chevy and everything works fine. no my trailer does not have LED lights.
asked by: Jason
Expert Reply:
According to what you told me, since it's not the LED lights, you may want to re-check the ground on the vehicle side. Since you are not getting the proper signals to the trailer lights then you will want to start off by making sure your vehicle end connectors where the factory harness plugs in do not have any corrosion on them. make sure sure they are clean and the pins are not bent. Yes, this applies on new trucks. If they look good then you will want to check the wiring on your vehicle for any places where it is corroded, bent, exposed, or damaged. You can use 16 Gauge Wire # 16-1-1 and Butt Connectors # DW05744-5 to replace any wiring that needs to be replaced.
I also recommend checking the wiring on your trailer, even though it works on a different truck.
Make sure the main connector grounds are attached to clean and corrosion free bare metal surfaces. I recommend rechecking the ground because if there is anything between a light ground and the metal trailer frame or if the trailer has an aluminum frame, tilt bed, or folding tongue, any of these things can interrupt the ground.
Product Page this Question was Asked From
Load Resistor Kit for LED Turn Signals - 50 Watts - 6 Ohm - Qty 2
- Accessories and Parts
- Trailer Lights
- Load-Resistor Kit
- Diamond
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Trailer Wiring
- Q&A: Looking To Replace 7-Way Plug In Bed OF 2024 Ford F-450
- Shop: Ford Replacement OEM Tow Package Wiring Harness, 7-Way (Super Duty)
- Shop: 4' Pigtail Wiring Harness for Pollak Replacement 7-Pole RV Socket
- Shop: Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 7-Way Trailer Connector
- Q&A: Solution for Lost 7-Way Retaining Clip that Attaches to Socket
- Q&A: How to Wire a Replacement 7-Way for a Gooseneck Trailer
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Video: Feature Breakdown: Pollak 10-Terminal Junction Box
- Article: Trailer Wiring Diagrams
- Search Results: wiring
- Search Results: trailer wiring
- Search Results: wiring connectors
- Search Results: loom
- Video: Ultimate Overview of the Pollak 10-Terminal Junction Box
- Article: Trailer Lighting Requirements
- Video: Hopkins Trailer Breakaway Kit - Kit with Charger - 20400 Review
- Video: Detailed Breakdown of the Hopkins 7-Way RV Style Trailer Connector w/ LED Test Lights
- Video: Hopkins Trailer Breakaway Kit Review
- Search Results: hm50928
- Shop: 7-Way Trailer Adapter for Towing Trailers with LED Lights
- Shop: Hopkins Endurance 5-Way Flat Trailer Wiring Kit - Vehicle and Trailer Ends - Ergonomic Design
- Q&A: Troubleshooting Trailer Running Lights working but no Stop Lights or Turn Signals
- Q&A: Does 2017 Ford F-150 Require Adapter When Running LED Trailer Taillights
- Q&A: Does Hopkins 7-Way Trailer Connector Have a Wire for Reverse Lights
- Q&A: Troubleshooting Trailer Wiring Where Brake Output Circuit is Hot all of the Time
- Article: Breakaway Kit Installation for Single and Dual Brake Axle Trailers
- Article: Troubleshooting 4 and 5-Way Wiring Installations
- Article: Top 10 Upgrades for Your Camper
- Shop: Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector
J D.
4/6/2024
Do you recommend putting diaelectric grease on trailer lighting plug connections