Review on King Innovation 62210 Electrical Connector by John Kennedy

Love these. I used them to install new taillights on my boat trailer. They are filled with silicone sealant or something similar. If you poke at him with wires, he'll obviously break the seal. When you screw it onto the wires, a small amount of sealant comes out, but nothing interferes; just shows that it is well sealed. I sealed the wire nuts before using the silicone tubing and tamping into the nut, but I never know if I let all the air out and it forms a goo. It's not cheap but so convenient!