If you are repairing or manufacturing wiring for a Japanese vehicle, you must use the jaso d0144 pdf specifications. Using ISO or SAE wires may result in connectors not crimping properly due to insulation diameter differences.
High humidity accelerates galvanic corrosion and dendritic growth on printed circuit boards (PCBs). JASO D014-4 utilizes cyclic high-temperature/high-humidity exposures to test seal integrity and moisture condensation resilience. Water Resistance and Ingress Protection (IP) jaso d0144 pdf