A connector (1) for the connection to a magnetic coil (B) wound onto a support element (10) is described. The magnetic cable (C) that realizes the coil (B) is covered by an insulating layer. The connector comprises an elastic spring contact element (1,100,200,50) which is made of conductive material and which in the rest condition tends to return into the closed condition. The spring contact element (1,100,200,50) is kept in an open condition during insertion of the connector on the support element (10). Furthermore, the spring contact element (1,100,200,50) includes on its inner walls cutting elements (1d, 100d, 200d, 52e) for cutting into the insulating layer. Finally, stop means are provided in order to prevent the spring contact element closing by more than a given amount.

At the end of the closing phase the spring contact element (1,100,200,50) performs a mechanical retention function and at the same time creates an electrical contact between the support element (10) and the magnetic coil (B).

There is disclosed a tool head (26) used for securing a tap connector having a C shaped member and a wedge using a ram tool. The tool head (26) comprises an elongate base member (32) comprising first and second ends (34, 36) respectively. A collar (38) at the first end (34) of the base member (32) has a through opening (40) for receiving a ram tool. A head (44) at the second end (36) of the base member (32) is aligned with the collar (38) through opening to engage a C shaped member. A cable stop plate (28) is mounted to the head (44) for limiting movement of a tap line cable received in a C shaped member when a ram tool is securing a tap connector.