Installed in an '06 Mazda 3 and paired with a Pioneer DEH-4300UB deck. The only odd issue I've encountered is that it'll sporadically mute the stereo. It happens pretty infrequently, however, and all the steering wheel controls otherwise function normally and as expected

In my experience the installation was fairly simple (then again, I didn't have to cut any wires on the unit or add any of those tiny resistors). I decided to connect the necessary wires to the harness I received with the Pioneer deck instead of splicing into my car's factory wiring. Easier and less destructive.

Programming the unit was also fairly straightforward in my opinion. You press and hold the buttons on the steering wheel for a few seconds > release > watch the LED on the unit blink for programming confirmation > repeat until all functions are programed. Just follow the programing sequence in the order outlined in the instructions and you're golden. If you mess up, start over. You'll have it down by your third try (IF you even need to make that many attempts).

OVERALL, I like it and I still recommend it even with it's odd little muting glitch. Had to ding it one star because of that, though.

As for "Look/Design": I gave it five stars for it's stealthy, seamless integration into my car's interior ;-)

As for durability: it's held up quite nicely in the extreme weather changes we experience here in upstate NY (below freezing winters, unbearably hot summer days).

I just installed this with a Sony XAV-62BT in my 07 Toyota Highlander. It took me several tries to get the programming right, but once I did it worked great. The instructions leave a bit to be desired, both in terms of the physical installation and in how to program the device. I thought I had it right, but found that only one button (volume up) worked right. Other buttons didn't work as intended. Eventually I re-read the instructions and examples and figured out my error. Once I did that it worked flawlessly.

I used this product on my truck F-150 with my Panasonic radio and it works fantastic.

Worked first time (after I followed the instructions). Very adaptable unit to suit most cars; no delay after pushing steering wheel buttons.

Works as advertised.

Item works great most of the times, but lags like crazyyy at times.

Overall good product. Took a while to program/install. Does what it's supposed to do. Only con is that it's a little slow, there is a noticeable delay from when you press the button and when the device responds, but it's not too bad. Also for some reason every once and a while when I hit my turn signal the device will switch the source on the receiver, but that's probably an error on my part. Its worth it.

Product works awesome! Previously had the Pac adapter that was wireless which worked intermittently. I wanted something that was hard wired and so far this is working awesome. Only down side were the instructions. They were incorrect for my Jeep liberty and I received very little input from PAC's tech support. They tried to say that the voltage was too low without knowing anything about it and didn't listen to what I had to say. Ended up trying several different programs and a program for a different Jeep worked(99-04 Grand Cherokee). Sent them an email explaining how the instructions were wrong and all they said back was I needed to call tech for support. Pretty much useless. Either way, if you can figure out how to program it, its a great product!

I am fairly mechanical/technical but this item is fairly complex to install. But if you follow the directions very closely, it really does work. And once it is installed correctly, it works great. It took me about 3 hours to install.

It works well, and installation was as easy as could be expected. It comes with long lead wires.

Here is my setup:
2001 Impala
Metra GMOS-04 - converter necessary for GM Car
PAC SWI-PSv1 - Steering wheel controls
iPod Classic
XM SkiFi3 radio used through Aux port
Alpine MRP-F300 amp
Kenwood KFC-X1710 front speakers
Kenwood KFC-X692 rear speakers
Bluetooth with Sprint Mogul phone & Motorolla RAZR phone