Chrysler Repair: 2002 Town and Country Radio, fuse box, evaluation area

Question
QUESTION: Roland,

A friend was helping me replace a replacement radio in my 2002 T&C LXi.  Once the radio was pulled, the hot yellow wire seems to have lost power.  the auxilary line has power when the ignition is one.  also the interior cabin lights don't work anymore without the ignition on.  all fuses and relays have been checked and nothing is blown.  Is there an another fuse box somewhere other than the one under the hood?  the owner's manual says no, but it seems like a fuse problem.  

Please help.

ANSWER: Hi Harry,
While I don't have the wiring diagrams for the '02 model year, I believe that the wire which has lost power is Pink in color as that is the standard assignment for what is called the ignition off draw fuse (IOD). In the '98 model that fuse is located at the very rear of the underhood box and is sometimes overlooked. So see if you can find a small fuse such as that. There should be a "junction box" (fuse box by a different name) under the dash, but the IOD has never been put at that location. The IOD is what provides cabin lights, power locks, pre-set radio memory, etc. I can give you the other assignment colors so you can sort this out and complete the installation.
Use the "Thank/rate" below tab to get back to me. There is a section for comments, to which I will respond.
Also, please notice in the evaluation area an item "nomination?". If this response has been helpful, please change the 'no' to a 'yes' to give me a vote for 'expert of the month' of November, which contest ends this afternoon. I would really appreciate your doing that.
Thanks,
Roland

---------- FOLLOW-UP ----------

QUESTION: yes i would very much appreciate the wiring colors.  thank you.

Answer
Hi Harry,
Another minivan owner with the same radio replacement issue asked about a similar problem he is having. So I described the plug wiring, what I see in the '98 manual, which is the latest I have. The wiring assignments usually are constant however, so see if your set up looks like this as well:
"There is a 7-wire black plug that is all for speakers so I won't get into that assuming the aftermarket adapter does too. There is 7-wire gray plug of which the pins 1-3 are also speaker wires. Then pin-4 yellow/black is the variable brightness panel voltage, pin-5 orange is the brightness panel voltage when no headlamps are in use, pin-6 red/white is the 12V power supply wire that is controlled by the ignition switch (accessory/run positions), and pin-7 pink is the IOD output voltage to sustain the radio preset buttons when the ignition is off. There is a black 2-wire plug with violet/brown and white/black wires that are the digital data bus wires that may have to do with remote control of the radio from the steering wheel if you had that feature. There is a black 2-wire plug with pink 12V IOD wire, dark green/red wire that is a slightly different 12V supply from the ignition switch (off/run/start positions). I don't see that in the wiring diagrams for the radio proper, just as a plug, so I don't know what it is needed for. Finally there is a single wire black plug with a black/dark green wire that attaches to a male contact on the radio chassis and that serves as the ground for the entire system. I suspect that the new radio is grounding out one of your 12V supply wires, or is in need of a ground wire for it to function (which would be the black/dark green).
Let me know if these are identical or not."
Thank you so much for the nomination. The fellow I am competing with is not averse to getting multiple nominations from a single questioner, and the management hasn't put a stop to it yet, so feel free to do it again today!
Roland