Land Rover Series 1 2 2a 2b 3.

Quality Lucas Type Brass 4.7mm Solderless Bullet Terminals/Connectors x10

Variously known as part references 514145, 27H6713, 188818 & 555910

Push on terminal (as found on Lucas lamps, voltage regulator control boxes and many other applications).

Used to connect the wires without soldering or crimping.

The wire is fed through the 2.0mm conductor hole in the terminal and folded back over the outside, then pushed into the socket