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I replaced the old unit with a new Valor overhead unit. The original Audiovox unit had a seperate power adapter connection (Red and Black Wire) in addition to the factory dome light wires (Orange, Gray, and Black). The new Valor unit has 4 wires and I have included the descriptions directly...

Hmmm..... Well, I installed everything yesterday and the polarity switch is set to negative. The unit powers up fine. I did notice that the dome light integrated into the overhead unit does not come on when the door opens. It has 3 settings (On, Off, and Door). If it's set to Door, the...

I found the answer! I called a buddy who works as a tech for GM and he called me back. He told me that the switching is Negative.

I am installing a new overhead LCD and DVD system in my 2007 Tahoe. The manual indicates that there are two kinds of dome light circuits (Positive switched and Negative switched). I have to set the polarity switch on the unit when I install it, but I don't know what the setting should be for...

Just updating everyone. I have everything installed and it works great. I dropped the glovebox and located the factory XM antenna lead. I removed the plastic cover off the end of the antenna lead and it plugged right into my Sirius Tuner. I tucked the Sirius tuner just behind the factory...

Any suggestions at all?

I may try that option if I can fit the Sirius tuner behind the glovebox. I was concerned that I may need some extra cable length if I need to position the Tuner away from where the XM antenna ends. Thanks for the tip!

Thanks....that's what I needed to know.

Thanks Ned! I got them and everything looks great. It's nice to have the full dealer invoice.

So the XM antenna actually plugs directly into the back of the radio? I was told by someone else that the XM tuner is located behind the glovebox and the antenna connects to the Tuner. The tuner then connects into the back of the radio. I bascially need to locate the end of the antenna...

Correct.... I have an aftermarket stereo installed that is Sirius ready. I am going to use the factory XM antenna instead of running a second antenna. The Sirius tuner comes with a roof mountable antenna, but it's easier just to use the XM antenna that's already in place. I just needed...

I want to run a connection from my front stereo head unit to the overhead DVD system. My overhead unit is an aftermarket installation and I took it down the other day to see what connections were already there. A small square was cut out of the headliner (I assume where the dome light use to...

Is there anything in the VIN code that confirms which type of LT package was factory installed? My new Tahoe is suppose to be an LT3 and it definitely has all of the upgrade options, but I know that the Nav and Rear entertainment system were aftermarket add-ons by the dealership and I was...

Where is the factory XM tuner located in an O7 Tahoe? I plan to use the OEM XM antenna for my Sirius radio and I need to know how long of a cable is needed to conenct the XM antenna to the head unit (I already have the adapter). I have read that the tuner is located behind the glovebox in some...

$50 bucks for a simple adapter? There has to be something out there cheaper than $50? Are there any other options?

I have a Sirius ready aftermarket Eclipse Navigation receiver in my 07 Tahoe and I would like to use the factory XM antenna with the Sirius tuner instead of installing a second antenna on the vehicle. I have found several posts on the web where people have used their factory antennas by using...

I called Eclipse today and the tech support guy told me that my unit was an AVN50D and he provided the links to download the product manuals. The link had manuals for Navigation, Audio, and Installation. I took a look at the Installation manual and the unit appears to have something called a...

The aftermarket Eclipse AVN50 is actually a Sirius ready unit. The Sirius logo is on the unit underneath the LCD screen. I guess that brings up another question. If I want to add Sirius radio, will the GM satellite antenna installed at the factory for XM plug into a sirius tuner or do I...

Ok...I went out and plugged in a set of headphones into the rear audio panel (on the back of the console). When I press the power button the rear speakers go off and I could hear the audio source playing from the front head unit. I could also turn the volume up or down. I then tried the...