remote cassette player wiring

I have a 2002 non-Bose Yukon with an OEM separate cassette player. There is a 9 pin connector. I am trying to wire directly an mp3 player and have found the wires for the left and right channels, and audio ground. I also found 12 volts, etc. If I place a blank cassette in the player, I can attach my mp3 player to the cassette player output, and the player plays great. I want to not have to put a blank cassette in the player, but rather make the system "think" there is one in there. I'm told this cassette player is the same as from 1995 to 2002 Yukon and Tahoe.


- Does anyone know the wiring of the output of the cassette player? What each wire color represents?

- Does anyone know if there is a "logic" that I need to do, like short the green wire to the black wire to make the head unit think there is a cassette in the unit?

Below are the 9 wire colors and what I believe they represent:

Orange = 12 volt always hot
Green = reads about 10.5 volts all ways
Black = chassis ground
Black w/ white stripe = ???
Brown w/white stripe = audio left channel
Green w/white stripe = audio right channel
unshielded = audio ground
Gray = ??? (possibly dimmer?)
Violet = 12 volt with key "on" or in accessory position


Thanks in advance

They sell an adapter that is fairly cheap just for that. i havent heard of anyone having any luck without the adapter. but if you find another way let me know