I have a 96 sc400 and I'm trying to replace my knock sensor does anyone have any pictures or can tell me in detail where it is on the car?

 

under the lower intake manifold.

basically...

remove intake
remove throttle body
remove BS plastic panels in the way

remove upper intake manifold
remove fuel rail
remove lower intake manifold
(you can do these all in 1 unit if you try hard enough)

and then below it is the 2 knock sensors.

thats it basically....

 

Awww...Look at that shiny starter. How many times to get one that actually worked? LOL, just ignore me and get that swap done Matt!

 

good lookin out