where i can find a tail light assembly of a corolla sr5 1989.
Hey rylfever! Your best and cheapest bet it to try your local junk yard. They have a pretty good network of used parts dealers to work with. That's a popular item believe it or not so you may need to wait a little bit, but again that's probably your cheapest out. Other than that your local Toyota dealer is a good source or there are literally hundreds of places on the web to order your parts. Hit your local junk yard first and see what they can do for you! Good luck!
Junkyard. I found 1 @ a junkyard in San Diego for about $40 removed - beats dealer.