On connector surfaces, dirt, dust, and other pollutants can build up and result in poor connectivity or even damage. To get rid of any loose particles, use compressed air or a soft-bristled brush. To preserve optimal performance and durability, automotive connections need to be regularly maintained and cared for, just like any other mechanical. This section describes cleaning techniques for pigtails and patchcords. Note: No known cleaning methods are 100% effective; therefore, it is imperative that inspection is included as part of the cleaning process. If we assume a connector has mating force of 3kg (6. 6 lbs) and that. When fixing a wiring harness, you might need a butt connector or pigtail connector.