i know these give out a pure white light and uses only 1 watt. is it going to be bright enough? will the light on the dash come on if i put a set of these in my car? anyone with any pics of them install on their car?

its the third item:
http://www.superbrightleds.com/cgi-b...gi?product=CAR

http://cgi.ebay.com/ebaymotors/2pcs-...spagenameZWDVW

i am also looking for led bulbs for the smaller round headlights, not sure if they have those in leds. and if i need some resistor to make them work.