I like to search eBay for a US seller to get the quickest shipping and a low price. I recently purchased some leds from this seller for both my Hondas and they arrived quickly and are extremely bright.

31mm festoon for map lights (only need 2 for the s2k)
http://www.ebay.com/itm/251370474189...84.m1423.l2649

168 wedge bulb for trunk/license plate
http://www.ebay.com/itm/261319520519...84.m1423.l2649

 

I live right by iJDMtoy and actually walked into their store front last week. Their product is pretty good and easy to install. You can search for the S2000 on their website so needing the part number, etc is unnecessary.

 

I bought this led combo for the S. US seller with fast shipping & would recommend.

http://www.ebay.com/itm/230699601217...#ht_2365wt_990

and these led panals for my 4runner (might buy some extras for the S).

http://www.ebay.com/itm/310686098483...84.m1497.l2649

 

this.

i havce been using that site since 2009 at least, they rock. they have some 198 bulb for the trunk that plug in to the stock socket then have a wire leading to a separate board with 30 smd leds on it. i wanna try it. lol. i recently installed RGB leds in my footwells, they make a huge difference while getting in and out of the car at night. look good too. red or amber for night time driving is nice. they are also dimmable which is a must IMO

 

I installed single blue LEDs (got them at Wal Mart for $11) for each foot well and hard wired it into the power socket circuit with "Add a circuit " so it will be off when the ignition is off) and they are great when dark. I borrowed the idea from my MDX which does the same thing. Not super bright, just right. They do not come on when you open the door, not sure if you would notice with the bright LED dome lights on.