Review on 🛥️ Waterproof Automotive Relay with Pigtail - Pack of 1, 60/80 Amp 12 Volt, Heavy Duty 12AWG Tinned Copper Wires, Marine Relays for Boats, Car Fans, and Auto Applications by Gary Stringfield

I'd say it's weatherproof so far. It is mounted high up in the engine compartment near the firewall. So far, so good. I don't expect any future problems from him. In braids such as high-quality wires and insulation. They are easy to bend and guide. The insulation seems to withstand semi-indirect heating well. I heated the shrink wrap around the terminals at the ends of the wires with a small butane torch and the insulation didn't melt or bulge. I don't know if it will stand up to direct heat. The wire harness and relay click together with an oddly satisfying click. Unlike some of the inferior ones that you fear will come loose if you hit a pothole too hard. I certainly wouldn't hesitate to purchase more if the need arises.