Today, we're going to review part number 804C. This is the 3M Scotch Lock quick splice wire connector. This is a blue connector and also has the gel on the inside. It is used for size 14 to 18 gauge wire. Basically, the gel that's used on the inside here is a weather protecting gel so when the wires make their connection, it helps resist corrosion. This is used to either connect two ends of wires… see more >