The left rear corner has the line cord, junction box, then wires come up from there into freezer rear left corner. The junction strip in the freezer is above the evaporator, about 2 ft off the freezer floor, back left side (from front). I figured to drill about 4" above that strip, assuming there would be no wires there. I thought to just penetrate the inner metal liner, then poke an ice pick through to avoid any possible wires,punch it into the back metal face to mark the location, then probably drill from the back to just penetrate the metal. Then poke a wire through the insulation, attach to the white wire plug, and seal around each hole with silicone.