J. D. Auto Electricals [p] Ltd. Manufactures Joint Terminals for Electrical Purposes. J. D. Auto Electricals [p] Ltd. Is an ISO/TS 16949:2002 awarded company that also manufactures wide range of terminals. Joint Terminals for Electrical Purposes are abrasion resistant. These are made of Zinc metal and Aluminium metal. These terminals are easy to install and highly durable. These are available with accurate dimension. This Joint Terminal is available in 4344 and 4345 series.