Remove all electrical power from the circuit in both sections of the following instructions. Never attempt to clean any connector or device while it is under operation or power.

Wipe the connector free of any dirt or debris using the clean rag. Pull the connector apart exposing the female socket and the male probes or pins. Observe the condition of the male pins. A green or whitish powder on the pins indicates a corrosion problem. If the metal appears rusted and broken the entire plug assembly may have to be replaced.

Tear a small piece of the fine sandpaper, approximately one inch wide by two inches long. Buff or rub the pins with the sandpaper to remove the discoloration of the metal. You can wrap the small piece of sandpaper around the pin. Rotate the paper until a clean or shiny metal surface appears.

Brush the metal pins with the toothbrush. Apply a quick spray of the electrical contact cleaner to remove any dry dust or corrosion. Use vinegar to clean the pins if contact cleaner is not available. Brush the pins again to remove any left over debris.

Apply a spray coating of the contact lubricant. This will aid in keeping the corrosion at bay and increase the conductivity of the connector.