IAN LANG ELECTRONICS

G9

Figure 3: G9 fitting.

An odd one this, used on halogen bulbs and one you don't often see. Mainly they are on lamps but you can buy adaptors to allow them to run from a Bayonet or Edison fitting on your ceiling lights.
Used where a small, 40 or 60W incandescent bulb would have been.

MR fitting

Figure 4: MR fitting.

Used in lamps and uplighters, the base cant really be up-hanging.

lampdiagram

This is an American one issued by replacementlightbulbs.com

It hasn't come out too clearly, sorry about that.

american