AIT II Connectors JST Automotive Connectors AIT II unsealed low-profile connectors can be used in a wide range of automotive applications. The AIT II Series reduces height by more than 30% compared to the Standard USCAR footprints. The current rating is 5A DC max., while the voltage rating is 14V DC. There are multiple varieties of JST Automotive Connectors AIT II can be used in many applications. AIT II connectors are ELV/RoHS compliant.