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Make sure you have a stereo jack, not a mono (stereo has three solder points). A stereo jack is configured to accept the Tip/Ring/Sleeve (TRS) male plug from the iPod, etc. TRS carries Left +, Right +, and ground in that order. This should correspond to solder points labeled 1, 2, 3 on the jack. If you are using a 4 wire cable from the 4PDT switch: Left + to 1, Right + to 2, Left - and Right - both to 3.
Indy, if you are still monitoring this thread, here ya' go:
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Probably, but I'm on the road for a few days and can't confirm it.
I am not sure when I am going to get to this, so if you can verify when you are back in town I would appreciate it.
Finally got to look at this, all wire color codes for a 2003 EB w/ Nav are the same as the picture pinout I previously posted. Have fun, Milkman!
Tanikir, I used 18 AWG 4 conductor speaker wire to keep things clean.
Thanks Cat. I did it before seeing this message yesterday afternoon and came up with the same conclusion!!! LOL.....

I hate to be a guy that resurrects an old thread, but here I am! I just purchased a 2004 EB Epedition and would love to add this aux jack to my stereo.. CAn any please explain the wiring sequence to me... I can get the parts no prob it's just where the wires should go is the problem... Any help would be appretiated!! Here is my email: [email protected]![]()