2009 cadillac wire issue

2009 CADILLAC STS
12,500 MILES • 6 CYL • 2WD • AUTOMATIC
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LARRYBARTEE
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I have a 2009 cadillac STS for which I'm trying to hard wire a radar detector. I'm having a hard time finding a keyed wire! I have found a battery wire on the cig lighter but I need a accessory wire so the detector will be off when the car is off. I have found wires i thought were accessory wires but turned out not to be or ack funny when tapped! Any advice or web site that will show me a diagram. Did find one promising wire, pink wire to the auto dimming mirror...Only problem is finding that pink wire on the floor where I need to tap into it.

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Larry
Mar 16, 2011 at 12:17 PM
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WRENCHTECH
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Connections like that are usually made at the fuse box. the problem with your car is the fuses are under the back seat. You really need someone that knows what they are doing to identify a safe circuit to tap into. You have a lot of modules that can be damaged easily.
Mar 16, 2011 at 12:38 PM
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LARRYBARTEE
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Thanks for such a fast reply. I have a fuse box under the rear seat? I found one under the hood but didn't know of the one under the seat! do you know of a site to look at wiring diagrams? Or do you know of a circuit (under seat) that I could use.

Thanks Larry
Mar 16, 2011 at 1:04 PM
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WRENCHTECH
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There are 2 fuse boxes under the rear seat and they have numerous "key on" circuits that could be used but you have to make sure you are running through the fuse and not after it.
Mar 16, 2011 at 1:33 PM
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LARRYBARTEE
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I can't thank you enough. Later i will pull the back seat and check some circuits. Yes, I will makesure I'm after the fuse. I radar detector hard wire kit also has a fuse on it. Thank you again for your help.

Larry
Mar 16, 2011 at 2:45 PM