base and a tiny microphone, about 1/2 in diameter. I passed the cable inside the dashboard/cluster parts that fit with ample gaps. I will post a picture later. If you wanted an OEM look, somewhere inside the A pillar or the T bar covers would be good places. These locations would require the right grille and some disassembly. I am reluctant to remove any plastic panels in these old cars, as the securing tabs can easily become victims of the process. It is getting hard to find those parts. Blue and red 1990 models even worse.