I need to replace the a/c filter on my '05 tl. i have the right filter according to the dealership but i can't figure out where the thing goes....i've pulled off all the engine covers and looked around but i can't figure it out. has anyone else done it their selves?

 

Welcome to the forums.

You should always check out THE 3G GARAGE first.

This should get you started. It's behind the glove box and tons of people, including myself, have done it by themselves.

F-130: DIY: Replacing Cabin Air Dust & Pollen Filter
https://acurazine.com/forums/showthread.php?t=87494
https://acurazine.com/forums/ramblings-12/firewall-help-123884/ Good pictures here
https://acurazine.com/forums/showthread.php?t=131831 Replacing the filter without removing the entire glove box

I deleted the post you made in Problems & Fixes since you made this thread and will get enough help here.