I've tried several different types of Type 194/168 (interchangable) LED bulbs
and settled on this one because it was the brightess:
Go to this link:
http://frickinbrite.com/catalog/product_info.php?cPath=40_63&products_id=141
Plug and play and the lenses are quick to remove. The bulbs are polarized, so check it before screwing the covers back on. These are superbright and really add a slight whiteish blue hue back there.
Here's another tip, this LED bulb panel fits perfectly inside the puddle lamps under
the mirrors at $12.99 ea:
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=280165191577
You have to take a screw driver, pry out the entire white bulb case. It will pop out of the bottom of the mirrors and you can unplug the wire. Then you will have to pop off the diffuser lens which are glued on. Put this flat LED panel into it and reglue the lens back on. Then you can slip the whole assembly back into the mirror. However these are polarized so check the polarity before popping it back in.
I haven't done any interior conversion yet but I'm sure the bulbs are available at vleds or superbrightleds.com.
For backup bulbs (7443) I tried several LED's but they weren't bright enough to be actually useful in backing up, so I chose function over form and went with PIAAs Xtreme White bulbs here:
http://cgi.ebay.com/ebaymotors/PIAA...012QQitemZ220167574396QQrdZ1QQsspagenameZWDVW