Does anyone know if I can plug my XM radio into the AUX jack on the G8s stereo?

mac

Yes you can. You will still need to run the antenna and all that.

Yes you can. You will still need to run the antenna and all that.

Sweet! Thanks dodson!
Anyway to utilize the OnStar antenna?

mac

Sweet! Thanks dodson!
Anyway to utilize the OnStar antenna?

mac

Not too sure about that one. I have heard of people using the XM antenna for Sirius but never the onstar for XM or Sirius. Probably be best to just run the XM antenna itself.

I'll post some pictures when I can (gotta cut the lawn), but I've got my Pioneer Inno 2 all set up in my car now!

I love it. Since I'm not an expert car audio installer, I just went to Best Buy and had them run the power, wires, and antenna.

I've got it on the ledge in front of the battery pac man gauge.

I went running around in my G8 with one of the guys from G6Performance. My wife cut the grass while I was gone. :)
Looking forward to hearing about the XM/sound quality.

Not too sure about that one. I have heard of people using the XM antenna for Sirius but never the onstar for XM or Sirius. Probably be best to just run the XM antenna itself.

The antenna on the G8 actually has Onstar and XM, and AM/FM. There should be a loose end for the XM cable somewhere...

The antenna on the G8 actually has Onstar and XM, and AM/FM. There should be a loose end for the XM cable somewhere...

Really??? That would be awesome!

mac

is this true this would be great i have sirius direct connect? it may work!!!

The antenna on the G8 actually has Onstar and XM, and AM/FM. There should be a loose end for the XM cable somewhere...
I would like to know if anyone has attempted to remove the OEM Blankpunt stereo from the GT's. I need to know if I can simply buy a sirius tuner and connecting to the AUX jack in the rear in order to give a seemless look. I also would like to know if there is a factory replacement in case this is not possible. Please let me know.

Seems a good idea, i never hought about it :S

the antenna is in the trunk for x/m remove the cover in the trunk and u will see it

the antenna is in the trunk for x/m remove the cover in the trunk and u will see itcan you indicate specifically where in the trunk, ie behind what cover?

The antenna on the G8 actually has Onstar and XM, and AM/FM. There should be a loose end for the XM cable somewhere...

Got proof? That would be great if that's true. And it would explain why it's so damn large. :rant:

subscribing. . .I would love to find a way to connect my XM roady to the XM antenna my car suypposedly already has. Then all I'd need to do is find a way to hardwire the actual connection to the radio (other than through the aux port on the face plate - that's for my IPod.)

subscribing. . .I would love to find a way to connect my XM roady to the XM antenna my car suypposedly already has. Then all I'd need to do is find a way to hardwire the actual connection to the radio (other than through the aux port on the face plate - that's for my IPod.)You should try the rear aux input for the roady.

Different thread on that as it may have video input also.

Read the whole thing to see the inputs:

http://www.g8board.com/forums/showthread.php?t=687

Has anyone confirmed the existance of a "loose" wire for connecting an XM/Sirius receiver to the Onstar antenna, or come up with a way to splice into the existing wiring ?

Why would there be an XM antenna already on the car when it doesn't have XM?

Why would there be an XM antenna already on the car when it doesn't have XM?

It's just speculation.
The simplest answer is that GM just used an off the shelf unit that is used on other models, with OnStar and XM.

mac

Why would there be an XM antenna already on the car when it doesn't have XM?

I received this PM from someone who works at Holden:

i asked a couple of people i know that work with the main body harness and wiring areas, apparently the wiring for the XM is in the MY08 harness, but its taped down with the rest of the harness on the right hand wheel arch, behind the rear seat.

the XM reciever is under the parcel shelf in the boot, next to the on-star module. so according to that, the main hard work seems out of the way.

BUT..

there was a part number change for the main harness from 08 to 09.

this could be any minor change such as wiring connection shapes, but could be something major too. only other area i didn't get a chance to check out is the headunit.

to me they look identical, but surely there will have to be something that can be done to upgrade, or it could even just work when its all connected?

hopefully this helps! if i can find anything else out i'll keep in touch.

I received this PM from someone who works at Holden:

What is the "XM receiver"?

Why would there be an XM antenna already on the car when it doesn't have XM?

I had also read that somewhere in the '08 G8s is the reciever for the XM system. Satelitte radio requires a different antenna than FM/AM. This is why I asked for proof when someone posted that the standard radio antenna has the capability to pick up XM's signal. I'm not gonna call anyone a liar unless I can prove that they are wrong. But, if they know that it would work, then they will have to prove that.

I had also read that somewhere in the '08 G8s is the reciever for the XM system. Satelitte radio requires a different antenna than FM/AM. This is why I asked for proof when someone posted that the standard radio antenna has the capability to pick up XM's signal. I'm not gonna call anyone a liar unless I can prove that they are wrong. But, if they know that it would work, then they will have to prove that.

I concur. BUT, I think the gist of what others were saying, is that the antenna on the roof, is a combo antenna.
If you look at the rear window glass, there is no antenna element.
Therefore, we could conclude that the AM/FM antenna is in the same housing as the OnStar. OnStar being satellite, it would not be out of the question, that XM, also satellite, could "share" the antenna with OnStar.
It would be my guess that the AM/FM antenna is the mast part of the unit, and the satellite antenna is housed in the somewhat large base.

mac

I'm sure this is wishful thinking on my part, but it almost sounds like all the parts are there, they just need to be plugged in?

If you look at the rear window glass, there is no antenna element.
Therefore, we could conclude that the AM/FM antenna is in the same housing as the OnStar. OnStar being satellite, it would not be out of the question, that XM, also satellite, could "share" the antenna with OnStar.
It would be my guess that the AM/FM antenna is the mast part of the unit, and the satellite antenna is housed in the somewhat large base.

mac

Could be. I would ask that anyone with this technical knowledge could produce evidence of that multi-use antenna.

in the trunk there is a fuse for x/m too the antenna. take out the back trunk covers its very easy to do and u will see the x/m antenna u cant miss it

You should try the rear aux input for the roady.

Different thread on that as it may have video input also.

Read the whole thing to see the inputs:

http://www.g8board.com/forums/showthread.php?t=687

Thanks for the info, but I read through that post and another imbedded in that thread and don't see any clear details on the ability to use the second aux input on the back of the radio. In fact, from what I can tell, it does exist but it would require new radio software in order to use that second aux in.

Maybe I can just find a splitter with a switch that will allow me to toggle between XM Roady and my IPod. This would at least eliminate the need to swap the cord between devices.

Still would like to know if there is any way to hook up my XM Roady to the stock antenna (if it indeed has a satellite feed, which given OnStar it probably does.) At least that would eliminate another wire in my car!

in the trunk there is a fuse for x/m too the antenna. take out the back trunk covers its very easy to do and u will see the x/m antenna u cant miss it


What is very easy to do? Connect my XM Roady to the car's existing xm antenna? Please elaborate - thanks!

Thanks for the info, but I read through that post and another imbedded in that thread and don't see any clear details on the ability to use the second aux input on the back of the radio. In fact, from what I can tell, it does exist but it would require new radio software in order to use that second aux in.
Maybe I can just find a splitter with a switch that will allow me to toggle between XM Roady and my IPod. This would at least eliminate the need to swap the cord between devices.

Still would like to know if there is any way to hook up my XM Roady to the stock antenna (if it indeed has a satellite feed, which given OnStar it probably does.) At least that would eliminate another wire in my car!

If you go into the audio setup menu you will find a setting where you can turn the rear aux on/off.

mac

I concur. BUT, I think the gist of what others were saying, is that the antenna on the roof, is a combo antenna.
If you look at the rear window glass, there is no antenna element.
Therefore, we could conclude that the AM/FM antenna is in the same housing as the OnStar. OnStar being satellite, it would not be out of the question, that XM, also satellite, could "share" the antenna with OnStar.
It would be my guess that the AM/FM antenna is the mast part of the unit, and the satellite antenna is housed in the somewhat large base.

mac

We have a winner.

No I don't have "Proof." Beleive me or don't.

I've got Sirius so I don't know if this XM connection would work or not, but it's worth a shot.

Anyone have any more information on where this supposed XM connection is? I'd like to have a better idea where it's at or if it even exists before I go tearing my trunk all apart in a mad frenzy. Just telling me it's in the trunk behind one of the panels does me no good. Which panel and where is it approximately?

Moving on in case it doesn't really exist...where did you guys mount your antennas, tuners, and how did you run all your wires?

I painted my antenna white and have it on the trunk lid. Wire was real easy to route through the truck, under the sill plates and dashboard on the passenger side of the vehicle. The head unit (Sportster IV) is fastened to the right side of the center stack and positioned right in front of the power port and AUX in. Power and auxiliary cables are bundled behind the head unit.

I'll try to grab some pics and post them.

I painted my antenna white and have it on the trunk lid. Wire was real easy to route through the truck, under the sill plates and dashboard on the passenger side of the vehicle. The head unit (Sportster IV) is fastened to the right side of the center stack and positioned right in front of the power port and AUX in. Power and auxiliary cables are bundled behind the head unit.

I'll try to grab some pics and post them.

Awesome...thanks speeder!!!

Since my G8 is red, I may just leave the Sirius antenna black. That was one of the first things I thought of when I got this car, how to get that wire inside the car.

I've got a Sportster IV as well so I'll be interested to see how you have it mounted.

For the power cable, did you tap into the cars power system anywhere so the unit turns on when you turn on the car or do you just leave it plugged into the power port?

Also, I decided tearing apart the trunk wasn't such a bad idea since it would also allow me to turn up the amp gain. I found a plug that I have no idea what it goes to. Anyone know? Could this be the mysterious XM plug?

I took my girlfriend's car to the stereo shop to get XM installed and they put the antenna on the dash, in the right hand corner. Didn't need to run any wire outside, and it works great. They said mounting the antenna inside the vehicle works fine for XM, but not so well for Sirius.

The Power Port under the radio works as an accessory, only 'hot' with the key. It's also on the retained power circuit, like 10 minutes of power after the key is shut off and before any door is opened.

Briefly, your Sirius turns on and off with the car when in the Power Port.

The Power Port under the radio works as an accessory, only 'hot' with the key. It's also on the retained power circuit, like 10 minutes of power after the key is shut off and before any door is opened.

Briefly, your Sirius turns on and off with the car when in the Power Port.

Just a side note. My retained power works until the driver's door is open, even if another door is opened.

mac

Just a side note. My retained power works until the driver's door is open, even if another door is opened.

mac

Yeah, I noticed that too. I was messing with the stereo and I was on the passenger side. I pulled the key, opened the door and the stereo didn't turn off. Had to open the drivers door to turn it off.

Can't wait to see your pictures speeder!!!

Here's a few quick pictures of my Sirius install:


http://i301.photobucket.com/albums/nn58/speeder52/100_2023.jpg

http://i301.photobucket.com/albums/nn58/speeder52/100_2025.jpg

http://i301.photobucket.com/albums/nn58/speeder52/100_2026.jpg

http://i301.photobucket.com/albums/nn58/speeder52/100_2019.jpg

http://i301.photobucket.com/albums/nn58/speeder52/100_2022.jpg

What's that last picture of? I've been sitting here for five minutes trying to figure it out!

What's that last picture of? I've been sitting here for five minutes trying to figure it out!

Isn't that the wiring conduit on the trunk lid?

mac

It's the wire conduit for the trunk. I passed the antenna wire through that to the interior of the trunk.

Awesome...thanks speeder!!!


Also, I decided tearing apart the trunk wasn't such a bad idea since it would also allow me to turn up the amp gain. I found a plug that I have no idea what it goes to. Anyone know? Could this be the mysterious XM plug?

Anyone find out what this plug goes to? I have it in my car as well.

Also curious to know if anyone has been successful at hooking up the Onstar antenna to XM or Sirius radios?

Also, I decided tearing apart the trunk wasn't such a bad idea since it would also allow me to turn up the amp gain. I found a plug that I have no idea what it goes to. Anyone know? Could this be the mysterious XM plug?

No that is not it. The XM wiring should be one the other side of the vehicle anyway...

No that is not it. The XM wiring should be one the other side of the vehicle anyway...

Yeah, I didn't check the other side. I knew that's where the amp was so I figured any other radio wiring might be on that same side as well. I'll have to check out the other side.

Still, I wouldn't mind knowing what that loose plug is for.

Has there ever been confirmation/location of the XM antenna connection?

Speeder. what mount did you use (and where did you get it) for your Sirius please?

thanks!

Got my Sirius Sportster 5 on order from Crutchfield. Should have it tomorrow and will get it installed Saturday. Plan to mount the antenna like Speeder did but still not certain on how to mount the head unit. I love Speeder's method but I need to maintain ability to open the glove box so will have to come up with something at least slightly different.

Anyone know if ProFit or any manufacturers plan a vehicle specific mount for our cars?

Yeah, I didn't like the mounting point Speeder used either for the same reason of wanting to open the glove box. Also, it sticks out into the leg area of the passenger side of the car. It was nice if no one ever sat in the passenger seat or you never opened the glove box, but still. Soooo, I just ran all the wiring and just stick it down in the little cubby next to the power outlet and just leave it.

Just got my stuff, appointment with installer at 9:30 tomorrow morning. I have a couple different mounts, hopefully he and I can come up with a good solution.

I could be mistaken, but I heard the newer plug and play type XM radios do not require the regular attenae. You simply plug it in to the front of the radio with a power source. I could be wrong though - anyone heard of this?

No that is not it. The XM wiring should be one the other side of the vehicle anyway...

Yeah, I didn't check the other side. I knew that's where the amp was so I figured any other radio wiring might be on that same side as well. I'll have to check out the other side.

Still, I wouldn't mind knowing what that loose plug is for.


Well, I looked on the other side when I did my Sirius installation and there's no plug on the other side. All the wires I saw were for lights and the trunk latch. If anyone has any idea where this plug might be, I'd be interested to see if it would work with my Sirius as well so I don't have to have that satellite antenna mounted on my trunk deck.

Has anyone gotten any new info? I had it in my last 2 vehicles and really would like to have it in my GT. I'm just wondering if the wiring/antenna is there than all we would need is an '09 head unit?

What does the plug with 3 or 4 wires above the amp and battery goto? Someone has to know...

Here's a few quick pictures of my Sirius install:


http://i301.photobucket.com/albums/nn58/speeder52/100_2023.jpg

http://i301.photobucket.com/albums/nn58/speeder52/100_2025.jpg

http://i301.photobucket.com/albums/nn58/speeder52/100_2026.jpg

http://i301.photobucket.com/albums/nn58/speeder52/100_2019.jpg

http://i301.photobucket.com/albums/nn58/speeder52/100_2022.jpg

Where can i find a mount like that? i like that.

It was part of the kit supplied with the Sirius Sportster radio.

It was part of the kit supplied with the Sirius Sportster radio.
is it suction?

messing with mine i found the antenna is magnetic. so it sticks to the center speaker cover in the dash and gives perfect signal! So ill be mounting it there. lol

Pro Clip USA (www.proclipusa.com (http://www.proclipusa.com)) has a G8 specific mounting bracket thats INCREDIBLY easy to install but expensive.

Its a two part solution. so if you do order it, you'll need the G8 specific mount PLUS the device specific mounting bracket.

I got mine yesterday and had it fully installed in less than 5 minutes.

Pro Clip USA (www.proclipusa.com (http://www.proclipusa.com)) has a G8 specific mounting bracket thats INCREDIBLY easy to install but expensive.

Its a two part solution. so if you do order it, you'll need the G8 specific mount PLUS the device specific mounting bracket.

I got mine yesterday and had it fully installed in less than 5 minutes.

Pics?

Pics attached from their website. There are two clips available. Angled and center....

I got a suction mount from walmart... and its great!!