here is a thread that shows removal of trim to get to radio....
http://www.clublexus.com/forums/showthread...X300&page=2
By the way be gentle when removing this strip. once it is done the rest is common sense, as the screws are quite visable.
hello, the amp you are looking for if this is the rx300 is actually under the front passenger seat. the seat has 4 plastic caps over the parts that are bolted into the floor board. take a flat head screw driver and pop those off. using a socket wrench, remove the nuts. the seat will lift up but not too high. underneath there are two plugs that attach the seat to the controls that allow the seat to be programmed and heated. once you unplug those you can remove the seat very easy. that big black box is the cars amplifier and subwoofer. its bolted into the floor with 4 bolts.
as to the radio, a flat head will remove the trim and like the previous posting be gentle. it pops right off and you have to work it around the shifter. its not just the trim, its actually the lower portion that also wraps around the shifter, with the heat controls and lighter attachment. once that is removed, the screens and bolts holding the lcd and control panel will be exposed. this is all one unit, unbolt and unscrew all attacments and then that slides right out.
i do this so frequent once its mastered you can get it out in less than 10 minutes. the seat, well i'm only 5'2 and want to be careful so it takes about 15 to get the seat out. hope this helps...
kathy