O.K. so I took my 2007 RX400h apart tonight, found the M1 connector, studied it carefully looking for the bluetooth wire, identified position 25 and...... there's no wire in it! There are only wires in positions 1 - 17, 20 and 21. There are two wires I would call "light blue". One is in position 17 and the oother in position 20. Can anbody help me with this?