I am getting out of the radio repair hobby. I thought I would pass along what I have learned.


Begin by removing the CDM module from the top of the radio (3 screws) Then completely remove the circuit board from the metal enclosure.


Turning the board upside down with the smoother side up, locate the MUX chip (Pictured) You want to cut the circuits from terminal 3 and 13. (Pictured)


Wire your aux input (From Radio Shack) like pictured and match up the wires to the pc board.


This will enable you to have an aux input for a remote location in your car. Choose the right length of cable for that. To put the aux on the face will be another how to instruction.

Ground wire leading from the AUX jack needs to get screwed - or soldered - to the case or under a circuit board screw.



IN THE PICS I posted here:
Orange and White/Orange = 1 channel ( Right )
Brown and White/Brown = 1 channel ( Left )



Traces can be cut at any point between the 2 solder points used for each channel. Just follow the trace connecting the 2 solder points ( example; Orange wire and White/Orange wires ) and find a good place to cut the trace that connects those 2 solder points. Traces cut are shown with very small blue arrows in the pics above.


Aux signal will interrupt FM and / or cassette, and AUX input will play when AUX plug is inserted into the jack. No need for a working cassette deck using this method.

Wow

Your the best. This info is just what i needed. I hope when you say cut the trace , you mean scratch it out.