I found this write-up a long time ago but forgot about it til now.
It's all in Japanese but the photos are very straight forward. I'm sure google can translate it if you wanted.
but good reference pics if you want to try your hand at it.

http://www1.bbiq.jp/burialc2/led-tail/index.html







for those too lazy to click the link.

celica056 by C Lor, on Flickr

celica057 by C Lor, on Flickr

Hey now it looks like every other 90's Japanese car at night!

still better that than looking like any modern day toyota.