depends on your application what resistors you need....

what are you thinking of doing? domelight replacement "bulbs" are already made for 12V... but anything else... you have to wire in stuff...

which then i go to Fry's for resistors.

 

for head lights and in the car lighting

 

http://cgi.ebay.com/ebaymotors/9005-...QQcmdZViewItem

 

man.. noobs need to learn the SEARCH button.. its very helpful.

direct led replacements for the interior dont need reistors as they are direct replacment. headlights are simple.. you could try to RTFOM or take a peek for yourself.. as if you have eyes, you can swap them out in under a minute.

but, if your tight on cash, why even mess w/ cheap bulbs? leave it halogen till you can afford HID.. till then.. rock the stock.. and use the search button and read the owners manual. youd be surprised what you can find w/ out having to start a topic over.. if your search comes up empty, then post your question...