I have a 03 SR5, the limited takes dif bulbs I think.....Here are the following part numbers and quantities. I had the dealer print out the diagram of the control unit to show me which part #'s went where.

(3) 90010-09015
(2) 90010-09017
(1) 90010-09018
(2) 90010-09019

I didnt take any picks my self, my digital cam is broken, but view this thread and scroll down a ways, How to Remove the Navigation Head Unit from a 2003 Toyota 4Runner, this guy has some good pics on how to do it. I had my laptop in the passenger seat and followed his instructions as I went. Be careful when tightening the new bulbs in, is it is easy to strip the flat head slot in them. Honestly its easier than an oil change. It will take more force than you initially want to pull the control panel off, but thats how it needs to be done. After replacing the new bulbs mine snapped back in very easily. When following his thread once you pull the AC control panel out and unhook the cable, you wont need to take the control panel apart any further as he does in the thread. You can change the bulbs from that point and snap it back in . Let me know if you guys have any more ?'s I will help with what I can.