
Tell me about it, trailer plugs are a hassle. Dirt, rain, dust and almost anything will stop them from working.
If you have a problem with your trailer plug then do not just replace them as the problem will return. Upgrade your trailer plug to a more heavy duty type then the connections will last longer or God willing, the problem may never reappear.
There are lots of trailers plugs around. I prefer 7 pin flat because the terminals are larger. You only need 5 pins on standard trailers. Electric brakes and an aux circuit require seven pins.
If your plugs are likely to get a lot of wear then use the metal versions as they are more durable.

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