Review on High-Performance 12V DC Waterproof Relay with Harness - Heavy Duty 12 AWG Tinned Copper Wires, 5 Pack SPST Automotive Relay - 80/60 AMP 4-pin by James Cross

I tried stripping the first wire of the first relay to connect it (the wires in the kit I received ended up not being tinned, just cut off and fully insulated) out drawn from the nest of the base. After that I used a V-cutter instead of regular wire strippers on the connections and the other wires passed a light test without pulling them out, so that's probably the only manufacturing flaw I accidentally spotted right away. Pull the plug out of the socket and crimp it properly and reassemble the socket, but it's disappointing that this happened with the first of 25 pins I've worked with.