if you need to remove your stereo and its a ...
592347
if you need to remove your stereo and its a sony, get these.  Screwdrivers will not work and likely you will damage something.  Use the right tool for the job.  Less than a minute and it pops out.  Safe to have little kids around while you work. :-)
3491955
Dont even think about not getting this product. Pony up that cash and purchase this! You will regret it later if you dont, plus after you install your new stereo, you don't want to have to rip all the chords out again to hook this puppy up!
1454160
The product works as advertised.  Just wire it up to your new stereo and plug it in. Your done.  Enjoy!
1642
I bought this to replace the stereo in my 98 Jeep Grand Cherokee. Fits fine after you cut off a few tabs as noted. The CD tray is better than losing the space.
4474337
This is great but won't work if you after an after market stereo installed and removed the support bracket for the factory stereo to make the new one fit.

Let me rephrase that, it will work and hold a phone fine but the ball mount can not be screwed it so it has the possibility to shift on you.
4854353
Done are the days of CDs/MDs/cassetes...  You just press a button on this stereo and its playing the playlist from your Iphone right where you left off.  You don't have to take your phone out at all, even for making/recieving calls. You can do it all with the stereo controls.
Initially I thought having bluetooth enabled on my Iphone all the time would drain the battery faster, but I don't see any significant difference.
1981671
Easily removed my factory Ford stereo deck.
176433
Worked as advertised to remove the radio from a 2004 Audi A6 2.7T.
466791
I'm using these as the power hookup for my amplifier for my subwoofers in my 2010 Xterra. I like having the ability to remove them for extra storage space and I was a little concerned that these seemed to be basically the only product that would do what I wanted. They don't have instructions that come with them, but if you're looking at purchasing these I assume you're the type of person who can figure it out pretty quickly. The short version is you strip your wire, insert it into the connectors that come outside of the plastic housings, then solder them in and insert the connectors into the housing so they engage with the spring plate inside. **Note: Do NOT insert the connectors into the housing before soldering or you're gonna' have a bad time getting them back out**

Once the plugs are assembled they are super secure and effective. The spring plate on the inside of the plugs make sure they have a solid connection and require a good amount of force to actually remove, ensuring they're not going to jar loose on you or come unplugged. Aside from the instructions these connectors are excellent.
807032
First of all this is a necessity for installing a car stereo anymore.  With all the various configurations in newer cars you don't want to go in and just start cutting plugs and wires.  More specifically, with the Bose Lux models of GM trucks (mine is a 03 Denali, but I think Z71's and Denalis have this setup) it is required.  The way the factory amps and head units talk on these vehicles, you need this adapter to wedge an aftermarket stereo into the equation.  If you want to go fully aftermarket, you'll need to bypass the factory amps and subwoofer with new wiring, and install all new speakers.

That said, now that it's installed it works great.  The gain knob on mine increases and decreases the stereo volume nicely, though the chime knob doesn't seem to change the volume of the "you left your keys in" chime at all.  Maybe I'm listening for the wrong chimes.

Be aware that the instructions for this unit are very lacking.  There are no photos or diagrams, and the directions are vague at best.  I have installed a dozen or so stereos in my life, so I know a bit about what to do, but this was still slightly challenging.  The biggest issue is actually that they have upgraded this harness over time (though there is no indication of WHICH GMOS-04 version you have received) and they have not updated the directions.  So there are wires on the harness that are not mentioned in the directions.

Of particular note, I also bought a&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Metra-Axxess-ASWC-Universal-Steering-Wheel-Control-Interface-Black/dp/B0039H2W66/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Metra Axxess ASWC Universal Steering Wheel Control Interface (Black)</a>&nbsp;which is made by the same company.  They were nice enough to actually do most of the wiring for that unit for you in the GMOS-04.  In fact if you buy both you will only need the box from the steering wheel control- the plug (assuming you get a newer GMOS-04) is already integrated into the harness.  You simply combine the ground wires and hot wires and then plug in the box.  While this is convenient, the directions from both products made NO indication that the harness was there.  The only way I figured it out was noticing the similarity of the extra plug, then tracing the wires according to the directions from the steering wheel control, and determining it was what I thought it was.  Even then, I crossed my fingers on startup to see if it actually worked! (it did)

Also, the harness had a wire for "parking brake" and another for "reverse" though I had read online my truck did not have these available at the stereo connections.  The parking brake may or not actually go to it, but with my stereo, a&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Pioneer-AVH-P4300DVD-7-In-Dash-Double-DIN-DVD-AV-Receiver-with-iPod-iPhone-Control-Pandora/dp/B004HW6F7Y/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Pioneer AVH-P4300DVD 7" In-Dash Double-DIN DVD AV Receiver with iPod/iPhone Control, Pandora</a>&nbsp;the parking brake needs to be on, off, then on again.  So this was not possible with that wire.  The reverse wire did in fact work, so the magic of the wiring harness comes through again.

As for the parking brake scenario, for that particular model (and probably other Pioneers, maybe other brands too), I was unable to access my parking brake sensor, so I installed a single pole single throw non-lighted switch on the wire, then ran that wire to ground.  Mounted the switch on the dash, so now when I need video on the screen (only when parked of course; video while driving is really dangerous and very illegal) I just flip that switch on and off and it works.  The system needs to see ground, but ONLY AFTER the unit is powered up.  Simply running it to ground without the switch will not work.
4454498
Its a good device if you don't wish to invest in a new stereo system for your old car. The only problem I have are the battery discharges quickly and also the quality of music is not too good.
1177593
This is a great easy option if you want to keep the factory stereo. You just run from wires from your speakers , 12V power, and ground then your off and running. I have a very high end system in my other vehicle and I guess I was hoping for a lot more with this sub but I knew or figured by its size it would just be decent and it is. But its nothing like running a real sub box and an amp. I mean what do you expect for $200 and this compact size. If your expecting everyone to look at you driving down the road you will be disappointed. If your looking to make your factory stereo sound decent with minimal fuss then you will be very happy.
1693499
Excellent replacement for the original. You will need the Audi Vw Mercedes Double Din Radio Removal Key Tool (2 Pair) to remove the stereo system before you can replace this.
2215973
Really good for audio and head unit but i had something on top of it and it won't turn on again
1104051
the volume knob stopped working after about a year of use. Cheap price yeah, but do you want to have to change out your stereo again in like 1-2 years?
763106
Stereo never turns off does fit 99 jetta but does not come with other adapter plug In so stereo turns off kills my car battery after a few days if not driving
3076834
I installed the adapter in my 2000 Civic in about 30min w/o removing the stereo and it works great. The only problem i had was the 3.5mm audio jack was a bit corroded causing a bad connection but once I polished it up it is fine. If your on the fence for getting one I'd recommend it especially if your using one of the radio station devices to play audio through your car speakers.