Participant. Another way to prevent getting this page in the future is to use Privacy Pass. So, during daylight, no problem b/c all of the appropriate lights work just fine. If the running lights are not working, one of the first things to check is the presence of a blown fuse. The truck has the factory plug to attach to an after market female receiver for the trailer wiring. 1 - 10 of 10 Posts ... 412 Posts . The right tail light does not light up. An hour into the drive back home we stopped to fuel up and I noticed that one of the trailers taillight covers fell off, but the light was still intact. Hook up your trailer and connect the trailer light harness. Please enable Cookies and reload the page. Any other fuses I should check? Ever since I bought the D, the running lights for the trailer haven't worked, but all the lights on the D work. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. The daytime running lights on your vehicle are a safety feature that allow other drivers to spot your vehicle on the road during daylight hours. I just bought a travel trailer and I can't get the running lights to come on, no matter where the switch position is on the dash. If you do have a running light signal on your trailer connector, then the issue is likely on your trailer. Two types of a trailer wiring tester. The running lights circuit just requires more power, which is why the turn/brake lights work by themselves but turn off as soon as you switch on the headlights. Another way to prevent getting this page in the future is to use Privacy Pass. Performance & security by Cloudflare, Please complete the security check to access. The brake and turn signals work fine on the trailer. ► Determine if the Issue is With the Tow Vehicle Wiring or Trailer Wiring Disconnect the trailer from the vehicle and run a test to determine if the trailer lights function properly. Nic Barker. Is there a fuse in-line somewhere? Performance & security by Cloudflare, Please complete the security check to access. This video is just to tell you about a problem I fixed last night. This is an overview on how to fix a broken boat or trailer light harness. Posts: 381. Check these to make sure not corroded etc. My turn signals work just not the running light. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. 15" 9 LED 3 Red Trailer Light Bar [DOT FMVSS 108] [SAE P2] [IP67 Submersible] Identification Running Marker ID Rear Trailer Tail Light Bar for 80" Enclosed Motorcycle Utility Marine Boat Trailers. Left turn, right turn, and brake lights all work. Your IP: 128.199.87.111 My running lights for both my jet ski trailer and my travel trailer are not working when hooked up behind my 2016 Ford F250 Super Duty. If all of the lights are connected on the same circuit and one of the fuses is blown, then the lights will not work. Checked fuses at both fuse boxes and did not find any bad. I thought maybe I stretched a wire in the trailer, so when I got home I hooked it up to our Chrysler that we haven't sold yet and all the lights and signals work, including the running lights, so it's not the trailer wiring. Would this have something to do with pulling my drl fuses? • Running lights did not. Question: Hi, we bought a 2017 31 ft travel trailer last weekend and after hooking it up to our Ford diesel all of the lights on the trailer worked. You could always have a severed wire somewhere too. I think load resister is needed if you have led lights since they don't draw enough. Discussion Starter • #1 • May 14, 2012. If all the lights appear dim or you have no lights at all, check the trailer light harness at the tow vehicle. FREE Shipping on orders over $25 shipped by Amazon . Jump to Latest Follow Status Not open for further replies. What I recommend doing is checking the main harness ground along with the individual grounds on each of the trailer light assemblies - making sure they're … I checked for power coming out of the 4 pin on the truck and I am getting no power from the running lights but do get power for the turn/brake lights. They also increase your road vision during sunrise and sunset. July 4, 2017 at 11:42 am #1702327. Wire the vehicle side wiring harness to a standalone battery. I’m having problems with the lights on all but one of my three trailers. My running lights for both my jet ski trailer and my travel trailer are not working when hooked up behind my 2016 Ford F250 Super Duty. went to dealer they said trailer is not compatible with truck said it was a pulse width modulated system in truck and I needed a 55ma draw from trailer lights to make it work and need a load resister on lights. 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. I know the trailer lights work fine (hooked up to a buddy's truck). The trailer running lights stopped working when hooked up my 2011 Silverado, however, the brake lights and turn signals are working fine. I swapped the after market receiver out with a new one and it is still acting the same way. Sometimes just loosening and retightening the ground screw gets you back in action. Running lights not working the runnign light are not working. We have a 2011 350 extended van. If all on the trailer ground connections are in good condition, then I recommend following the running light circuit along the trailer looking for any pinched, frayed or cut sections of the wire that could cause a short or keep the signal from reaching the trailer lights. 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