I liked using this adapter, but was quickly disappointed after connecting it. The light in my caravan was not working properly. I considered sending it back but decided to take it apart and compare it to the connection diagram on the product box. It was found that the brown/tailed wire and the yellow/left wire were swapped on the 7-pin side of the device. Fixed manufacturer's assembly (sloppiness) and it works as intended. What a problem for someone to return this product as the manufacturer wasn't very proud of their product.
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