Cadillac SRX First Generation Forum - 2004 - 2009 Discussion, 05 SRX Back Up Camera Install in Cadillac SRX Forums; I know this maybe an old problem, but I trying to find info on how to hock up a back ...
On the inside cover of your jack compartment lid is a list of all your options. If XM is built into your nav then you should see it listed. U2K includes a wiring harness for the XM tuner. That harness is the one that the lockpick will connect to: http://www.coastaletech.com/CADILLAC_APPLICATIONS.htm
One additional note about RPO U2K. If your '04 - '06 SRX was not originally built with the U2K option then it is all but impossible to add it. It is my understanding that GM will only sell the harness as a replacement for a bad U2K harness that was built into the car. If you get one out of a junkyard, it won't work as it is "locked" to the VIN of the car it was built for. Obviously, that was part of the agreement XM made with GM to insure that owners of a non-factory XM car would have to buy an aftermarket XM kit to add XM to the car.
Wrong...if you have RPO U2K which is the XM radio option. If you have that, then you can get a lockpick and get the video input that you need.
There is no lock pick for VIDEO input on the 04-06 nav system only the 07+. Check your source because either they or you don't know what they are talking about. The denso system used in that car is the same as the xlr.
The link you provided is for an iPod lock pick same as the usaspec pa15-vette. It's to connect charge control and display audio for the iPod. It does NOTHING for a visual image input to display on the nav.