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Troubleshooting 2017 Toyota Tacoma Sending Power Only to Trailer Right Side Tail Lights


2017 Toyota Tacoma 6 cyl double cab, 5 foot bed. We hooked a cargo trailer up to truck today for the first time and the truck is sending all the power to the right trailer light. I know its the truck because we hooked it up to a different trailer and it did the same thing. Even when the truck is off, the right back trailer light is on. Please help.


Expert Reply:

Since the issue appears to be on the vehicle side for your 2017 Toyota Tacoma, I recommend first checking the connector itself. Look to see if there is any dirt or corrosion built up inside the connector that may preventing a solid connection with the trailer harness. Also check the wires directly behind the connector for any damage.

Another possibility, especially if your Tacoma has the factory tow package, is a blown fuse. Check the fuses under the hood for any blown fuse that might be causing the issue with the left side of the trailer lights. If a replacement is needed, you can simply locate your local Toyota dealer or a local auto parts store for the correct fuse.

expert reply by:
Chris R

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