Remove the screws from the bulb lens (which you can access through the trunk or see your vehicle repair manual to get the exact location). Test all of the lights, from the backup lights to the turn signals and brake lights to ensure the problem is not the tow vehicle itself. However, you may find your tail lights not working, whereas brake lights are. The problem is back. The living room light, on the other hand, was a little more tricky. We have changed the bulb but still nothing. The Working Principle Of The Dometic RV Refrigerator Check Light. Because the most common reason for trailer lights not working properly is a bad or missing ground, check the trailer’s and truck’s ground connection first. To test the lights on your trailer and your Dodge Ram, you can purchase a trailer tester. If all of the lights are connected on the same circuit and one of the fuses is blown, then the lights will not work. Stumped here please help. Tonight I tried to set up one of my 12v RV lights and it did not work. Tried two different towing vehicles but same problem. As a result, an accident may occur due to dysfunctional tail lights. One of our YouTube followers (RV Habit) mentioned this tester, which will give you the actual reading of the volts, I think we’ll be picking one up soon. The Causes Why Tail Lights Not Working. © 2021 BullyUSA.com is an independent enthusiast website and is not affiliated with or endorsed by Pilot Automotive. Dimmers are going on the mason jar lights in the bedroom as well, so we took them down to try in the living room. If the bulbs are not the problem, disconnect the trailer's wiring system from the tow vehicle. The possible reasons for brake lights not working but tail lights are: The Light Bulbs. Check out the video below where I go through what we did in order to get our RV 12V lights working again: Some light fixtures within an RV can have switches located on a control panel. The pilot light is responsible for triggering the fridge burners. Luckily for us this time it was just because some wires had crossed. These will run on propane gas or electricity depending on the model. Use the circuit tester to see if current is going to the light fixture itself. Blown out light bulbs are the most common reason for why the brake lights not working but the tail lights are. I then unplugged both 13/7 pin adapters from the tester and plugged them in together so 13>7>13. We won’t go into detail on how we fixed that here. The first thing we checked was that the switch was on. I would try a few simple things first. My trailer has a fold over sink/stove cabinet and when it is in its upright position it pushes down a push-button switch to enable the ceiling lights. If the lights go dim, then there is an issue with the converter. If the output is going in and back on the right wires, the reason may be wrong trailer wiring, including improper ground wire connection, dirt or rust buildup, pinched or cut harnesses. I flipped the circuit breakers, tested the 12v disconnect fuse, and even turned on the RV. When it is sitting in the garage, you are losing time and money. Have a question, a mountain town recommendation or just wanna say hello? As the rear lights are not connected, they do not … Use a circuit tester to check whether current is flowing through. Downtime is money, and when your trailer lights are giving you troubles, your trailer is not road legal. If nothing else we hope it gives you a good place to start. Once we realized the fixture should be getting power we knew we needed to pick up a voltage tester. Andrew Demaree is Bully’s resident technical writer and automotive expert. Tail light housings should be secured to a metal surface (trailer frame), not wood or plastic. These light run so hot that the POPUPs needed a disconnect switch to make sure the lights would not come on when buttoned up. This didn’t fix the issue. Thank you so much. If the output is going into the box without coming out at all or goes on the wrong wires, check the grounding location. Check the ground wire (a white one on most vehicles) for disconnection or corrosion. But instead, we found a cool way to use a voltage tester to check fuses so we waited till the next morning. Because the most common reason for trailer lights not working properly is a bad or missing ground, check the trailer’s and truck’s ground connection first. Hook up your trailer and connect the trailer light harness. For instance, the light fixture above our sofa has a switch near the steps, this is also where our 12v on/off switch is located. Troubleshooting. What do you do if some of your RV 12v lights stop working? Although the brake lights are fully functional, other drivers driving behind you may not see you. So I toyed around with a couple other options. As mentioned above, the check light of Dometic fridge would activate if it a problem occur within the gas system. We found two blown fuses. According to the RVers Online website, the issue could be in the converter's diodes, transformer or relay contacts. A poor ground often becomes the culprit when only some lighting functions are working and when lights go out when you push the brake pedal. For instance, the light fixture above our sofa has a switch near the steps, this is also where our 12v on/off switch is located. In this instance it was as simple as replacing the fuses that had blown. Brian V 2006-09-06 11:21:49 UTC. Ground is achieved in one of two ways. The cause for only some of lighting functions working may also lie in “hot” wire issues. When connected to my fuse box the regular original bulb works no problem so I know I have the wiring correct. Please use your best judgment and follow safety precautions as the owners of Mountain Modern Life are not liable for any losses, injuries, or damages from the use of this information. It is possible that one of the bulbs on your trailer burned out. But it is possible that it is a ground issue. All of the nonfunctioning lights are in the front of the trailer. All brand names, trademarks and logos are the property of their respective owners!Sitemap | Privacy Policy | FAQ, The Best Auto Repair Manuals & Guides — HP Books™. Have a helper stand back to see if the running lights, stoplights and blinkers are working properly. If the fuse blows, the problem is on the truck. **Click "Show More" for more info**Check us out online for our RV, Boat, Jeep and Camping Blog Posts, Stickers, Graphics, apparel and more! A poor ground often becomes the culprit when only some lighting functions are working and when lights go out when you push the brake pedal. Step 16 - Dash lights are used in tandem with the running light system, these lights illuminate the instrument cluster at night while assisting visual aspects. Some light fixtures within an RV can have switches located on a control panel. It is a wildwood lite with a Texas 2004 license plate on it parked in Mississippi. I’m confident that the mason jar lights in the bedroom blew the fuse because the hot and ground wires touched. Volla, stabilizer jacks work, lights work, pump works, and tip out works on 12 volts. Some of the lights and display panels (like Smart EMS) do not work, but all the outlets seems to work. We could’ve used our needle-nose pliers to pull out the fuses and see if they were bad. Jack and plug should be the only connection between a truck or SUV and a trailer. Adress: 1244 Brookview Drive, San Jose, CA 95113 E-mail: [email protected]☆ ☆ ☆ ☆ ☆Buy Automotive Products Wisely! Once we reconnected everything we realized it wasn’t working. As you may already figure out, there are a wide variety of causes that could lead to the issue of RV 12 Volt system not working issue. The main objective here was to see if the problem was with our light fixture or with our RV 12V lights. Click to Enlarge. Use the following general guidelines on trailer lights troubleshooting that will help you find and solve the issue and get your trailer back on the road with its lights performing exactly as expected. We use cookies to ensure that we give you the best experience on our website and have updated ourÂ, Christmas Tree Hunting in the National Forest. I tested all the outlets with a tester and got nothing except “open ground” reading on 1 outlet. We use cookies to give you the best possible experience on our website. This DIY Modular Desk is perfect for small spaces! If there is no signal output going into the box, the problem is on the tow vehicle’s side (again, it can be caused by a blown fuse or wrong connecting points). I’m not sure exactly where the running lamp circuit fuse is located on your unit, but many travel trailers will have an access panel up under the front end of the trailer, behind the “A” frame. It’s important when a fuse blows to try and gain a better understanding of why it blew in the first place. The solution to fixing our RV 12v lights was replacing the fuses. When the fuse is blown it does not allow the circuit to complete. Assuming your slide that doesn't work is hydraulic, rather than electric, your symptoms are starting to sound like you may have a problem with the Power Converter (converts 120V AC to 12V DC). Katie and I are adding dimmers to a few of our custom made light fixtures. A mother of 5 completely transformed this 1997 motorhome interior and has a new book on camper renovating! Remove the cable between the truck and the trailer and make sure that the connections are clean and tight. The right side light does not work – no brake light or turn signal. It’s important to note that Katie and I are in no way professional electricians. All content provided is for inspiration purposes only. I bought a trailer light tester from Amazon. The main trailer connector grounds and the grounds for each of the lights need to be attached to clean and corrosion free bare metal surfaces. … Checked all switches, fuses, breakers which are all good. That means the fridge will include a burner jet, also known as a pilot light. Post by Dan All, I have a 1997 Coleman Santa Fe popup camper. Indicators still not working. Check your vehicle's plug configuration. Indicators & stop are now working OK provided the brown in not connected. Luckily for us, we found a pretty easy fix to get our lights back up and working. We assume the lights in the hall and bathroom are running off of 12-volt, and that other lights in the RV are working fine. We also donate 5% of all digital designs and mug proceeds to the National Parks Foundation! Also, if a connection to ground is faulty, chances are that trailer lights won’t work at all. Have you ever had issues with light fixtures in your RV? Most of the things in my trailer do not work now or I don’t know how to use them such as the gas oven, but I … In order to get the 12-Volt system back online, we have to decide exactly what prevent it from working properly. Check the area the ground is secured to – it should be the bare metal frame. However, the LED bulb would not turn on. the 12 volt lights in my "Utah" Coleman bt Fleetwood pop up camper or not working, even though the camper is plugged into power. One or two lamps not working is one thing, but no lamps working leads me to believe a fuse has blown on the trailer or there is an open in that circuit. Trailer tail lights not working? We recently re-wired the fixture and may have a mix up in one of the connections inside the fixture. All the outlets and exterior lights work fine. RH lights not working. While waiting for the dimmers in the mail we took down the light above the sofa to get an idea of how we’d install them. Creating projects with our tutorials and supplies is at your own risk. Soon we realized it was a bigger problem than our light fixture. The problem was the only stores that sold voltage testers were already closed for the night. If you have a power converter or a T-connector, disconnect the trailer and use a circuit tester to check whether a signal is going into and back from the converter or Modulite box on the appropriate wires. RH indicator works but LH one doesn’t. Well, that didn’t work out because there was nothing for me to ground the voltage tester to. Disconnect the battery with your RV plugged into a power source. After viewing, went right outside, crawled under the trailer, and low and behold, a very similar set up with power going from the battery to some form of power distribution. The interior of this nautical airstream remodel will inspire you to take a seaside vacation, This contemporary motorhome renovation was completed off-grid in under a month. Any ideas? lights were not working. If the running lights are not working, one of the first things to check is the presence of a blown fuse. Permalink. The first thing we checked was that the switch was on. In the first case, separate wires come out of each tail light assembly and are attached to a metal frame. Answer: Sounds like you are not getting any voltage to the right side. : the light fixture above the sofa all the lights with ones that are working properly wires, the! 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