Trailer Brake Lights and Turn Signals Work But Running Lights Do Not
Question:
2011 Chev Silverado, when you plug in trailer the blinkers and break lights Work however the running lights do not
asked by: Earl J
Expert Reply:
In order to determine where the problem is you will first need to test the connector on your 2011 Chevy Silverado without the trailer plugged in. Basically, you will use a circuit tester such as # PTW2993. Turn the running lights to the on position in the truck. Then test the connector to see if the running light circuit has power.
If it does not then the issue is on the vehicle side. It could be a blown tow package fuse. Using the owners manual, find the location of the tow package fuses to check them.
If the connector does show power like it is supposed to with the running lights on then the issue is on the trailer. It would likely be a bad ground connection. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light.
Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces.
The light grounds should also be attached to clean and corrosion free bare metal surfaces. If there is anything between a light ground and the metal trailer frame or if the trailer has an aluminum frame, tilt bed, or folding tongue, any of these things can interrupt the ground. Running jumper wires from the light grounds to the main trailer connector ground can help.
Products Referenced in This Question
Product Page this Question was Asked From
Adapter 7-Pole to 4-Pole and 5-Pole
- Trailer Wiring
- Wiring Adapters
- Multi-Function Adapter
- 7 Round - Blade
- Plug Only
- 4 Flat
- 5 Flat
- Hopkins
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