[Cliff8928]

Man, even I was confused by that pic when I first looked at it. But now realizing the arrow (duh) it makes more sense.

You're looking at basically the HVAC stuff from the firewall side of the car. Notice at the top it shows the ambient light sensor (for the headlights). So the dimmer module is bolted to a brace on the dash somewhere below where that is.

There isn't any better picture in the service info, but it does say to remove the closeout/insulator panel on the drivers side (the black panel above the pedals).