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LED Lights Flash on Trailer Towed by a 2008 Land Rover LR3 Using Adapter # C57003

Question:

I bought your 7pin to 7pin adapter but it does not stop the LED lights from flashing on my trailer. The trailer is also not recognized by the truck so my leveling systems and backup warning is not working correctly. The part number I purchased is made for Audi/Volkswagen parts but I was hoping it would also work for me. Any advice?? 2008 Landrover LR3 with new 2012 boat trailer from Mastercraft.

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Expert Reply:

The 7-Way to 7-Way adapter, # C57003, is designed to work on German vehicles like the VWs, Audis, and so on to deal with a bulb-out sensor issue present on those vehicles. It may not work the same for other applications like on your Land Rover.

If the LED lights on the trailer are not providing enough power draw on the system you can try installing some load resistors on each of the lighting circuits (right turn/brake lights, left turn/brake lights) behind the trailer connector. You would need # DI34ZR. These should provide enough power draw for the vehicle to recognize the trailer.

If there is still a problem then there may be something wrong with the trailer wiring such as a bad ground or there could be corrosion in a trailer connector causing the vehicle to not recognize the trailer.

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