![]() If any other battery appliances still work, then you are getting battery power, and you should move forward to isolate the issue. All your RV lights come from your battery power, so that will be the focus. ![]() No need to check things like your outlet, as this is ac power you get from shore power and not your battery. For more info on everything powered by your battery, visit my post on what runs off the battery in a travel trailer. Besides interior lights, your water pump, brake lights, turn signal, and running lights, are also powered by your battery. To further test the extent of the problem, do a quick test on other battery-powered appliances in your RV. With a blown fuse, you would have an electrical interruption as the wire would be disconnected from the power source.Įven if connected to shore power, your lights need RV batteries for the 12 volts to operate properly. Knowing that your fuse is good is a clue for looking at other possible issues that could be causing your lights not to work. Any loose connection of the fuse or if it is not properly seated in the panel will cause things like lights not to work. Either the panel was incorrectly marked, or the RV builders misconnected a group of wires to a different fuse location.Īs a double-check, check the surrounding fuses to ensure that the real fuse controlling the lights is the one you are looking at.Īlso, another good practice is to make sure the fuses are securely pressed into the panel box. You will notice that the panel is usually written, and mistakes can happen. There have been instances where I heard that a panel was mislabeled at the factory. And you will notice that the panel is labeled for each location of the fuse. Your panel will have a series of fuses, one on top of another. All your lights are powered by the 12 V battery and will have a fuse for each set of wires. Generally, a circuit breaker is ac power, and a fuse is dc power from the battery. As you can see, the panel is full of breakers and fuses. Let’s first take a look at the fuse panel. We will run through the common locations and solutions to lights not working. These lights have the same power source (12-volt battery) and will have a positive and negative cable. ![]() And the below process will work for most RV lights, including interior lights, running lights or even tail lights. We will go through the steps for checking your RV light that is not working. In this post, we will review the fixes for this issue, including: Many common causes of lights not working are a bad bulb, loose wiring, or bad ground. Knowing that your fuse is good, you can start to focus on other potential causes. If your RV lights are not working and your fuse is good, this post will help guide you to the solution.
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