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What Is The Vaseline Looking Stuff In The OEM Plug And Connector?

Question:

When disconnecting the OEM plug on back of trailer connector to install Smart Hitch camera/sensor system, found what looked like Vaseline on OEM plug and connector. Will this interfere with proper connection?

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Expert Reply:

What you found in the OEM plug and connector is not Vaseline, it is dielectric grease. It not only won't hurt the connector, it will help it. We use the Dielectric Grease for Electrical Connectors, 2 oz. # 11755 on the majority of our installs because it helps prevent electrical failures by keeping dirt, debris, and moisture that causes corrosion out of the connection.

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