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If the remaining lamps light up then the problem is between the electrical connector on the A frame and that first lamp in the circuit. 7 Jan 29 2008.
I have hooked up the same camper and utility trailer to my dodge durango and the running lights work just fine.
Trailer light troubleshooting running lights. Troubleshooting the trailers running lights using a tester. The first thing you should do is to check your vehicles system. Ensure that your tow vehicle tester is inserted correctly in the vehicle.
Doing this can enable you to know f the trailers running lighting system is correctly functioning. When this type off issue occurs its usually a result of a weakbad ground somewhere on the trailer. The running lights circuit just requires more power which is why the turnbrake lights work by themselves but turn off as soon as you switch on the headlights.
The first step to troubleshoot your problem would be to determine if the wiring problem exists on the vehicle or on the trailer. Turn on the vehicle headlights and use a circuit tester like part 40376 on the pin on the trailer connector that feeds the running light circuit. If your vehicle has a 4-pole connector test the pin being fed by the brown wire.
When you notice that your running lights have stopped working. The first thing that should be checked is the 7-pin plug on your lights. This is because the plug is the main thing that connects all the lights and wirings to your trailer.
If there is any problem with it then that might be why your lights have stopped working. As an additional troubleshooting step you can apply 12-volts DC from a small battery charger or other 12-volt source directly to the bulb contact on one of the two front corner running lamps. If the remaining lamps light up then the problem is between the electrical connector on the A frame and that first lamp in the circuit.
Trailer Running Light Problem - Solved - 2006 Armada. Jump to Latest Follow. That is the way the trailer running lights are supposed to work.
They are on only when your headlights or park lights are on. 2004 Armada SE Throttle body coolant bypass Grounding kit. I have the factory tow package.
When hooked up to my camper with the 7 way connector and with a 7 pin to 4 pin adapter for my utility trailer the brake lights and turn signals work however the running lights will not work. I have hooked up the same camper and utility trailer to my dodge durango and the running lights work just fine. 7 Jan 29 2008.
I had that problem when I first hooked up my friends trailer. I blew a fuse due to faulty lights on the trailer. I bought some replacement lights for her trailer and was going to put them on but another friend beat me to it.
Check the trailer for broken bulbs or. This Trailer Wiring Diagram Running Lights model is more appropriate for sophisticated trailers and RVs. It can transfer power better compared to the connector is suggested for higher-level electric in the vehicle.
Here is the diagram for 7-pin connector. White Pin to your floor. Brown Pin for unwanted markers tail lamps and running lights.
It is possible that one of the bulbs on your trailer burned out. So check the lights. If the bulbs are not the problem disconnect the trailers wiring system from the tow vehicle.
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. Because the most common reason for trailer lights not working properly is a bad or missing ground check the trailers and trucks ground connection first. 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.
Lower left running light would blink when the right directional was turned on right brake light would dim slightly when the left taillight blinked stuff like that. My original fixtures were the kind that the mounting screw for the fixture provided the ground connection via the sheet metal of the trailer. All your 12 volt lights are tied together in this box plug your cord into your vehicle turn on your running lights on and see if their is power coming into the wiring in the box.
If their is power for the running lights reaching the box then your issue is the trailer if their is no power reaching the wiring in the box then you may have a bad embilical cord. My trailer running lights dont work but left and right blinkers brake hazards all do. The same problem is true for other trailers I hook to my pickup.
Trailer wiring and lights are fine because another newer pickup when hooked to my trailers all show running lights and blinkers etc just fine. I have a 2006 GMC Duramax Diesel pickup 2500 HD. Check the operation of all your vehicle lights to make sure you dont have a blown fuse a bad flasher or a burned-out light.
Clean the connector and check again. Check for broken wires near the connector. If the trailer lights still appear dim or arent lighting at all clean the connector plug.
2014 - 2019 Silverado Sierra. 2014-2018 Silverado Sierra Troubleshooting. Trailer Running Lights Fuse.
Sign up for FREE. In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors Chevrolet and GMC branded pickups crossovers and SUVs. Check your vehicles plug configuration.
Hook up your trailer and connect the trailer light harness. Have a helper stand back to see if the running lights stoplights and blinkers are working properly. If all the lights appear dim or you have no lights at all check the trailer light harness at.
Im now 99 sure that my Honda Pilots honda-brand 4-pin wiring harness just isnt designed to provide the amount of juice thats required to run all the runnning lights on my boat trailer. Removing some of the lights or perhaps reducing current draw with lower wattage bulbs is probably the easiest way to fix my problem. Troubleshooting trailer lights is it a bad trailer light bulb or corroded sockets.
If you have incandescent trailer lights it could be a bad trailer light bulb. Remove the bulb and clean the contacts with fine sandpaper spray a little electronic contact cleaner put a little dielectric grease on the base of a new bulb and screw it in. I have a 2015 GMC Sierra and I had a light bar in the back for the brake lights connected to the 4 plug trailer light connector one morning I started my truck up and the light bar was on working fine five minutes later I go out to my truck and the light bar was off so initially I check the fuses and all seem goodthe blinker lights and brake lights work fine for the trailer but the running lights dont work so I unplug the bar and tested each connector with a tester and found the running.
This fact narrows down the troubleshooting process. Corrosion erodes the electrical contacts on the running lights causing the lighting malfunction. Road vibrations loosen connections thereby disrupting the flow of current.
Most trailer lamps are grounded by either a double wire set up or a single wire set up.