Troubleshooting Lights Not Working On 2023 Flagstaff Classic Camper
Updated 05/09/2026 | Published 05/05/2026
Question:
I have a 2023 Flagstaff classic camper and my running lights work on the camper but don’t have any signal and brake lights at all. I’ve checked my fuses and connections on the truck and trailer and they are good and even hooked a whole different truck up to it and same problem. What else could I do?
asked by: Ray
(click to enlarge)
Expert Reply:
Hey Ray! Since you tried out a different vehicle and had the same issue we can rule out the vehicle side. The first thing I would do is check your ground connection and make sure it is secure.
After that, I would go ahead and hook it up, run your brakes or signals, and test for power on the trailer side. Start by testing right behind the trailer connector. If you don't have power here then the connector is likely the issue and you can replace it with # PK12706. Otherwise, work your way back and check for a short in the wiring, repair as necessary.
(click to enlarge)
Product Page this Question was Asked From
Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- 7 Blade
- Plug Only
- Pollak
more information >
Continue Researching
- Search Results: epdm rv roof repair
- Shop: Alpha Systems 4034 Roof Coating for RV Roofs - 1 Gallon
- Video: Alpha Systems 4034 Roof Coating for RV Roofs Feature Review
- Video: Alpha Systems 8011 Adhesive for RV Roofs Spec Review
- Shop: Alpha Systems 8011 Adhesive for RV Roofs - White - 1 Gallon
- Shop: SoftStartRV Soft Start for Single Zone Air Conditioner Setup - Qty 1
- Article: Trailer Wiring Diagrams
- Q&A: How To Plug 1997 Lance Truck Camper Into 7-way Connector On 2016 Ford F-250
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: How to Replace a Lance 6-Pin Plug w/ a Standard 7-Way Connector
- Q&A: 7-Way Trailer Plug Adapter or Compatibility with Lance Slide-In Truck Bed Camper
- Q&A: Replacement for Atwood 61101 Brake Actuator
- Q&A: What Brand are the BK3-200 Bearing Kits
- Q&A: Wiring An Electric Trailer Tongue Jack Into 7-Way Vehicle Trailer Connector
- Q&A: Bearings and Grease Seal for Terran Axle Idler Hub
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Testing Trailer Brake Magnets for Proper Function
- Article: Parts Needed to Add Electric Drum Brakes to a Trailer
- Article: Rust Prevention
- Article: How to Measure Your Trailer Wheel Bolt Pattern
Dan
5/9/2026
I second Ray's input. Many times with lights it's a ground. I had an issue however that was a severed wire on the Lt rear turn signal. Tearing into a little Jayco was not fun.. but there it was a severed wire still in the insulating jacket. Check for a brake signal on your vehicle harness first... then onto that trailer harness staring up front. You'll get it. Best, dan