Where to find parts? (specifically map lights)

Super Bright LEDs - Miniature Wedge Base Bulbs

You want one that puts light forward.

[edit: actually, 2002 might take a different bulb in the map light. The vehicle cross check is ambiguous. Compare the pictures with the bulb to be sure]

 

Well whatever they are, I would replace them with LEDs.

Is it this one: Lamp, De3175, PK2 - Incandescent Lamps - Lamps - Lighting : Grainger Industrial Supply ?

 

I'm stumped.

Take the bulb with you to your local hardware store or auto parts store. See if they can find you a match. Make sure the voltage and wattage match as well.
Good Luck.

 

Have you ruled out the parts counter at a Toyota dealer, or is there none near you? That was what I did when my 2001 needed map lights, and it was pretty quick and painless. I think they charged about four bucks each. I guess that might be more than you could spend someplace else, if you don't account much for your own time finding the someplace else. The part number might be 90981‑12005 according to toyodiy.com (but then, the dealer can usually handle it just fine if you say you've got a 2002 Prius and you're looking for map light bulbs). They won't be LEDs though; if you want those you'll have to find your own retrofit bulb that will fit.

-Chap

 

The round metal on one end Map bulbs for 2001-2003 Gen1 Prius is bulb number 1895.
They are rated at 8W. You need two of them.
Amazon.com: SYLVANIA 1895 Long Life Miniature Bulb, (Pack of 2): Automotive

There also LED alternatives which you may or may not like.
The will appear if you search for "bulb 1895" on Amazon or Ebay.