I was looking at the back of my radio figuring out some stuff and came across three wires and what looks like a tan midi cable coming out of the stereo, heres a picture of the three wires:
I have looked on the WIRING DIAGRAM! post, but I couldn't find these wires on it, are these the wires that switch between deck and radio? and does the midi connect to the deck?

 

. . . need moar infoo . . .

#1: What year & model (Base? GL? Turbo?) is your car?

#2: What are the exact color codes of those wires in question? Your pic isn't close enough to show any stripes... are there color code stripes on the wires?

#3: Did your car come w/ a tape deck?

#4: In the FSM, it shows both base & GL models having 2 unused wires on the back of the radio.

 

oh yea, forgot to add that stuff
1979 GL N/A
there are no stripes, just basic colors, red black and blue, no my car did not come with a deck, and I have looked in the fsm, and it does show wires that I think are them but it doesn't say the color, it doesn't even show the midi or the antenna cable coming out the back