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Mating 12/2 wire to Davis Megalight
Connecting very small appliance/device wires to larger ships wires:
1. Insert stripped ends of BOTH the ship’s (#12) & appliance (#22) wires into the SAME end of a “Yellow” Butt-Splice (intended for #12 to #10), and crimp. You could gently twist the 2 wires together first.
2. Fill the un-used end (of butt-splice) with silicone, and install approximately 3" long adhesive-lined heat-shrink tubing over all (extending past both ends), then fill un-used end of heat-shrink /w silicone, and apply heat (shrinking).
3. Silicone will extrude out un-used end - wipe flush, and let set.
Don’t use solder, as it causes a “hard spot” on the wires, which is susceptible breakage due to vibration/flexure. ABYC doesn’t approve of solder-only joints.