The really small light bulb inside the hazard or rear window defroster switch
 

Does anyone have any idea where to get this one? I got my hands on a used OEM foglight switch from Japan for my 94 4runner, but when I was trying to figure out how to hook it up something was not right. Turns out there is a small lightbulb inside this switch (I assume it is the same setup for the Hazard and Rear heater switches since they have a constant backlight when your headlights are on), and this small lightbulb is not working. It' seated in a small white plastic socket, and it seems like it's stuck in there.

The bulbs in those switches and the sockets are all one piece. The socket has a phillips style head on the back of it and you rotate it a quarter turn to get it out of the switch itself. I went through this when I made all my backlighting blue. I broke a bulb off trying to get it out of the socket and then I realized it's all one piece. Toyota carries them. I went to a junkyard and swiped a couple. They are all the same for the AC, Hazard, Rear window, Rear defroster, ect.

Cool, thanks! I see you live not too far away from me... What junkyards do you go to in the area?

I've been trying to track down the actual stock bulb that goes into those sockets. I called the dealer and the bulb with socket is $9.00, which is crazy. I need 3 right now and I'm not paying $30 for those teeny things.

After poking around and using a set of calipers, it looks like this might be an 8640 bulb. You can see one here -

http://bulbster.com/lightbulbs/8640-p-2475.html

The only thing is the wattage seems a tad low.

I'll post once I've ordered some.

Cheers,
DrA>