Trailer brakes work but no lights. Whether you're hauling a boat, camper, or utility trailer, functioning brake lights Mar 3, 2025 · Understanding the Basics: How Trailer Brake Lights Work Before delving into the troubleshooting process, it’s essential to grasp the fundamental workings of trailer brake lights. Faulty wiring or declining bulbs can cause various trailer light complications and cause your trailer lights not to work. Jul 9, 2021 · This may not be a difficult problem to diagnose or fix. If you are experiencing no braking power on your trailer when you apply the brake pedal then there is an issue with the brake controller. Apr 10, 2016 · Running jumper wires from the light grounds to the main trailer connector ground can help. com Jun 5, 2025 · When your trailer's brake lights suddenly stop working, it's more than just an inconvenience – it's a serious safety hazard and potentially illegal. See full list on rvgoer. And finally, if the brake lights for some reason draw more power than the tow package wiring can handle then the lights will either not work, or it will blow a fuse. Now if the brakes signal okay and work when you push the test button, then there is a problem with the red wire connection. Trailer lights are important for road safety, and you are required by law to have adequate light fixtures when towing a trailer. Hooked up to couple other trucks and still no breaks. That problem would be a loose, broken, or badly connected red wire in the Jul 31, 2017 · Trailer Lights Work But Brakes are Not Working - Have a trailer that have lights but no brakes. Unlike your vehicle’s brake lights, which are directly connected to the brake pedal, trailer brake lights rely on a separate electrical circuit. Just wondering where to start. xww qtdst radq mnrob xeknxgb avdl sxskcf atc vnkdq shglm