Well I also couldnt get the touch part of the Navi to work, I figured it was the FCAN bus + and FCAN Bus - i think i cant remember right now would have to look at the book,, but my trick was let me see if while the radio was plugged in normally if it would work well it did,, so I disassembled the radio and took out the main motherboard for the radio,, the part with the pigtail connections, and hooked up ,,just the motherboard of the radio, so as far as the navi is concerned the radio is off but its still getting the FCAN +/- SIGNAL, wrapped the motherboard in a cerealbox cardboard shoved it under the dash, but I am going to cut the centerconsole and place my navi buttons where you did,, but its ok for now in the glovebox,, but I am going to have the same setup as you,,, just dont have time right now,, but when i cut my dash i didnt have to cut so deep like you did,, my cut was a little more precise, hahaha but you beat me to the punch with the install but i gonna try and make all the functions of the tl in the nsx,, we might have to race on this install you ahve a head start though but i work better under pressure, but i dont know if i like the 1994 Acura Vigor above me,,