Ok overall, very straightforward to do! I got them all off the one ebay seller I can provide links if need be.
All you have to do is pretty much swap the old for the new! As the LED's are mounted in the 'festoon' bulb ends. So no rewiring or anything required!
Only one youll have an issue with is the map lights, they are a different bulb all together no idea what sort. But I got some T10 superbrights and soldered them on to the old bulb. Also, the 36mm I got were only just too small for the existing sockets, so all you have to do is grab some pliers and bend the steel/copper/etc holders a tiny bit to make sure they stay put!
36mm Festoon (I needed 8 of these not sure about other model variants)
1pc Festoon Dome 36mm High Power LED (Xenon White) Bulb - eBay LED, Lights, Indicators, Car Parts, Accessories, Cars, Bikes, Boats. (end time 10-Jun-09 22:07:21 AEST)
T10 (I got 2 packs/4 bulbs - 2 for footwells, 2 for map lights but i had to resolder)
2pcs T10 168 194 High Power LED (HID White) Wedge Bulb - eBay LED, Lights, Indicators, Car Parts, Accessories, Cars, Bikes, Boats. (end time 14-Jun-09 18:43:10 AEST)
42mm Festoon
2pcs T10 168 194 High Power LED (HID White) Wedge Bulb - eBay LED, Lights, Indicators, Car Parts, Accessories, Cars, Bikes, Boats. (end time 14-Jun-09 18:43:10 AEST)
as an alternative...
Could try this for the map lights as I think its the same connection/base as the one si found in the map lights. Not sure though. Looks very similar.
2pcs BA9S T4W Flank High Power LED (Xenon White) Bulbs - eBay Bulbs Lenses, Lights Lighting Accessories, Car Tuning Styling, Vehicle Parts Accessories. (end time 23-Jun-09 01:45:39 AEST)
All up cost me about $80 or $90 incl. shipping and about an hour or so fiddling around putting them in! Good little mod to do, the results are well worth it!! Looks alot more ... european one might say!