After Installing In-Bed 5th Wheel/Gooseneck Trailer Connector, Only Running Lights are Working
Question:
i have a 2003 f250.i installed this kit very simple which was great.i hooked up my new big tex gooseneck trailer and the only lights working were the running lights,i have no brakes or turn signals.....any ideas
asked by: David N
Expert Reply:
You will have to make sure that the alternate ground wire on the Hopkins in-bed trailer connector, # 41157, is attached to a clean bare metal surface on the truck frame. If it is not then the harness will not work correctly. You can also try different grounding locations that could give you different results.
If everything is installed correctly and you have a strong ground location, unplug the trailer and use a circuit tester, such as # 3808, to test the connector while someone sits in the truck and runs through the various functions. If they are not working, disconnect the harness and plug in the factory wiring like normal. Then test the factory connector.
If the factory connector works without the other harness connected, that indicates a problem with the in-bed harness and connector and it will need to be replaced.
If the factory connector does not work that indicates a problem with the truck wiring. It could be anything from a blown fuse or relay to a dirty trailer connector, to a broken wire. These are the most common issues that you can check.
I have also seen issues on trailers that have junction boxes. Wires can corrode or break loose in these boxes so if the trailer has one that is something else you can check. If everything does work on the truck side then the issue must be on the trailer. If not the junction box then it could be a weak ground, corroded connector or broken wire on the trailer side.
Product Page this Question was Asked From
Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug
- Custom Fit Vehicle Wiring
- Fifth Wheel and Gooseneck Wiring
- 10 Feet Long
- Custom Fit
- 7 Round - Blade
- Hopkins
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Trailer Wiring
- Shop: Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug
- Video: Hopkins Endurance Fifth Wheel Wiring Harness Installation - 2019 Ford F-250 Super Duty
- Shop: Pollak Replacement 7-Pole, RV-Style Trailer Connector Socket - Vehicle End
- Video: Pollak 7-Pole Trailer Connector Socket Installation - 2000 Ford Expedition
- Q&A: Check Trailer Wiring and Trailer Disconnected Message on 2018 Chevy 4500
- Q&A: 7-Way Wiring Recommendation for 2019 Ford F-350 Towing 5th Wheel Trailer
- Search Results: 5th wheel wiring
- Article: The 5 Best Trailer Drop Hitches You Can Buy
- Search Results: gen~y hitch phantom
- Search Results: c57010
- Shop: EZ Flush Replacement RV Sewer Hose - 20' Long x 3" Diameter - Blue Vinyl
- Shop: Camco HTS Heavy Duty RV Sewer Hose w/ Pre-Attached Bayonet Fitting - Brown - 15' Long
- Shop: Bauer Products European Style Motorhome Entry Lock - Rotary Latch - Right - 8" x 4-1/4"
- Shop: TempMinder Electronic Weather Station - White - LCD Display with Green Backlight
- Shop: EZ Flush Replacement RV Sewer Hose - 20' Long x 3" Diameter - Silver Vinyl
- Video: Hopkins Endurance Fifth Wheel Wiring Harness Installation - 2020 Ram 2500
- Video: Camco Heavy Duty RV Sewer Hose Review
- Video: Quick Drain RV Sewer - Hoses - D04-0057 Review
- Video: Lets Go Aero Cargo Carrier D-Ring Tie-Down Anchors Review
- Video: Review of JR Products RV Doors - Entry Door Latch - 37211675
- Article: How to Charge RV Batteries
- Article: How to Rent an RV
- Search Results: hm20001
- Search Results: c56070
- Search Results: hm20087
- Search Results: 38656
- Shop: Gooseneck Hitch
- Q&A: 7-Way Trailer Plug Adapter or Compatibility with Lance Slide-In Truck Bed Camper
- Q&A: What Is An OEM Prep Package And How Do I Know If I Have It
on Custom Fit Vehicle Wiring
