Cadillac CTS The mid-sized sedan that has grown the popularity of the Cadillac brand with it's low price and sleek styling

"Wiring is fun"; Said no man ever.

Old 09-21-2015, 12:58 PM
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Join Date: Sep 2015
Posts: 2
Exclamation "Wiring is fun"; Said no man ever.


I am having some issues with wiring in an aftermarket radio. I have searched everywhere, however I still have a few questions before I start. I am mechanically inclined and on a scale of 1-10 (10 being Nikola Tesla) I’d say my electronic knowledge is about a 7 or 8.

My Car:
2006 Cadillac CTS
2.8L V6
Base model with BOSE
OnStar enabled

• For the aftermarket dash I will be using these instructions: ( but I need to know what ‘size’ the new hole will be so I can buy the appropriate-sized deck.
• I also need to know if there will be any loss of function (Minus OnStar) that will happen. I would like the radio to perform as a stock radio would, keeping the wheel controls, chimes, delayed radio power off (when opening door) etc.
• I would need a wiring diagram if possible of how to wire in the ‘new’ radio after its modified as above (I do not mind using a wiring harness as long as it does not limit the functionality.)

If someone that’s done this swap could chime in I would be grateful, or at least point me in the right direction?

Any and all help is appreciated.

Last edited by Allblack; 09-22-2015 at 10:51 AM.
Old 09-23-2015, 07:04 AM
The Hammerhead's Avatar
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Join Date: Sep 2015
Posts: 4

I'm new here but thought I'd chime in. Where have you looked for a deck? I ask because I replaced a stock Ford SYNC unit in my 2014 F250 this past winter.
I shopped at Crutchfield. Sure, I could have saved a few dollars elsewhere. But they had all of the harnesses that I needed to plug into the existing factory harnesses for the unit itself and the steering wheel controls. No cutting or splicing of the truck wiring. When I did run into a minor glitch with the microphone for hands free phone, their tech people were a phone call away and had an answer that fixed it.
Old 10-04-2015, 05:04 AM
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Join Date: Sep 2015
Posts: 2

I havent exactly looked for a deck yet. It doesnt really matter to me as long as i have bluetooth music streaming. I would love to just get a harness, modify the current radio and just plug everything in.

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