Power Door Lock Switch Connector

Your truck wiring harness was made of copper with a plastic insulation. The plastic insulation was porous. Contaminants, like oxygen, moisture and airborne pollutants, eventually pass through the insulation to attack the wire; a condition called oxidation. There is no practical way to completely seal off the circulation of air and moisture between the individual wire strands. Once the wire strands become oxidized, the internal resistance of the wire increases substantially. This can cause electrical gremlins like shorts and malfunctioning gauges. If your wiring has progressed to the next stage of deterioration by becoming brittle and cracked, it is in immediate need of replacement. At this stage, a short circuit to ground is eminent. In a worst case

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov