Abstract: The apparatus includes a battery terminal and a connector pin. The battery terminal is formed of an electrically condustive material and has means enabling it to be connected electrically to the positive or negative post of a 12 V DC vehicle battery post. The terminal presents two sockets each of which is capable of receiving a connector pin. The connector pin has spigot portion composed of spaced prongs biased apart from one another, so that the spigot portion can be inserted as an interference fit into the chosen socket.