I know from experience these are cheap waterproof connectors. There are many points for wire corrosion and failure in this kit on the salt covered winter roads where i live. Silicone seals on the connector side and open to elements on the back side where the copper wire is crimped to the pins. I probably just wasted $100. I should have done more research before purchasing. I might risk installing them on my work truck after sealing all the connectors