Well aware of this being a very old thread, but is there any chance anyone knows the wiring for 2000 avalon, am hoping to upgrade the stereo to a cheap nasty single din head unit, but all the diagrams i see online are american, and i don't believe I want to just hack away tapping into wires without knowing which is which, ive got the door trim off driver side door to source the color of the wires, given it had stock stereo in it, the wires appear to be all over the place, speaker wires mixed into one plug which also has ground etc, being 2 plugs or harnesses, one is 10 pin, the other 6, am unable to determine the correct wiring, for instance on the car harness, from diagrams ive seen pin one supposedly is meant to be a speaker wire, but this is not the case, its a heavier guage wire...so would anyone be able to help a bloke out, and shed some kind of light on this issue? i've uploaded photos of the back of the stock stereo, and the iso in the car. the stock stereo, as possibly aware already, is a Toyota 34243 cd unit ontop cassette deck on the bottom.
