If the wires are real small tie them in a square knot then slip a piece of heat tubing of the knot and use a hair dryer to shrink the tubing. If the wire is to large to do that the hold the ends of each other (about 1/2 to 1 inch) ---======----- and twist the 2 ends over each other ---xxxxx--- then slip a piece of heat tubing of the twist and use a hair dryer to shrink the tubing.