1993 RX7 Bose 2264 stereo
 

I have removed the Bose stereo from my 1993 RX7. The repair shop has asked to send the radio, CD and front amp and the CDM box. The first 3 I have but don't know what a CDM box is or where to find it on the car. ANy help would be appreciated??

I don't think there is a separate CDM box in our cars. Never seen it in diagrams either.