Another query in the wiring of the in car microphone. My car is a 2005 9-3 and I have fitted a Nokia bluetooth kit via the 18 pin connector socket on the passenger side. Sound comes through the car speakers and the multi function display shows "telephone", so, all good so far. Back to that old chestnut re connecting the built in Saab mic to the Nokia kit. I have searched the forum and found several references to the three pins on the back of the mic and high/low outputs. Here the the query. My car has twin mics in the courtsey light housing which are embedded in a kind of black oblong box that unclips and pulls out downwards. There is a four pin multiconnector on the top (numbered 1,2,3,4) though only three wires are connected, these are :- 1=(red/white), 2=(black), 3=(not used), 4=(blue/red). The Nokia has a mono jackplug lead for the mic which leads to pins 9 and 18 on the multipin connector, but the car mic does not work when connected in this way. I am currently running the kit with the separate Nokia mic sat on the dash (which plugs straight into the mic jack socket in the Nokia unit, thus dispensing with the mic connection via the 18 multipin) Does anyone have any knowledge of what goes where? The Saab mic unit is on the kitchen table. It can be opened by unclipping along one edge. Inside, there is an impressive looking circuit board with what looks like a microprocessor embedded within it - it would not look out of place on a computer!!. Pie and a pint to the first correct answer!!!