Sometime we would camp out in the night and used the vehicle cabin lamp. After sometime the lamp gets very warm creating the air flow in the cabin warm too. I decided to change it to LED and found this model selling reasonably priced, less than USD10. Made purchase for two pieces, one for the cabin and another for the rear door lamp.
This is a 3020 SMD 18 LED 12V type. Rating at 1.14watts, 0.08Amp producing around 525 Lumens. The size of the LED is 20x45mm and it comes with various connectors to suit your needs. The spring type connector able to fit between 31mm to 38mm.
Installation is rather simple, remove the old bulb and use the correct conectors to fit. The LED backing has a 3M double sided tape, simply stick it to the lamp housing and it is done. The result, it was brighter than before and less warmer.
Last installed was in Dec 2010, so far it has not failed. Below this Post there are different types of LEDs