I cleaned the oem hole with my carbide bit very lightly. I also cleaned the grinder marks done by the previous person who worked on this light. I pulled the wires from the oem hole to my new hole using a big paper clip and needle nose pliers:). I neaded some epoxy and spread it against the OEM hole with my finger then filled the rest. I leveled it with a safety razor blade. I let it set up. I put a second coat and leveled with the razor applying pressure with the razor on a good angle like 150 degrees.