can someone tell me which wire is for the illumination dimmer?

 

i dunno about figuring it out from those schematics...

but if you have a multimeter, its the one that gets about 12volts only when your turn on the head lights.

and just incase...you dont have to splice the wires to test them. just push the multimeter tip into the little plastic thing that holds the wires. there should be enough room to make the metal touch.

hope that helps

 

What car is it? I can tell you the color for LS400.

 

it's an es300.
what's the color for the LS in anycase; maybe it's the same.