A wedge base is a type of electrical connector used as a fitting for small light bulbs. It is similar to the bi-pin connector, except that the two "pins" are the same wires that extend into the bulb,
W2.1x9.5d base, a common 5-watt bulb in landscape lighting and some interior automotive applications such as the dome light
5mm dome LEDs with wedge bases and locking tabs
W2.1x9.5d base (as in the image at the head of the article), but 16 watts for automotive use
W2.5x16q base, 7- & 27-watt filaments for parking lights and brake lights
A lightbulb socket, lightbulb holder, light socket, lamp socket or lamp holder is a device which mechanically supports and provides electrical connections for a compatible electric lamp base. Sockets
Wedge base
…glass base. The bulb is inserted and removed with straight in or out force, without turning as with a bayonet mount or Edison screw, on certain bi-pin light sockets. For true wedges, compression is the force that holds the bulb in, while others use simple friction, or snap into a socket with spring-loaded electrical…
A standard American three-way lightbulb socket
115-volt airway beacon light bulb with a Mogul bi-post base
Metal halide lamp with G8.5 base
Architectural strip lamp with S14s connection