if you want steering wheel controls, yes

I just use the remote

 

You will need it if you want to use the steering wheel control

 

Just want to put in my 2 cents. I just got a pioneer avic-f90bt and got a PAC-swi-ps and they work great together the iPod interface is great on the pioneer and voice controls are good. The start up time is a little slow but that's what you get for 500 bucks so hope that helps

 

You can find the PAC SWI-JACK cheaper elsewhere.. its like $40 on Amazon.

 

If you get a Pioneer you need the PAC SWI-PS, not the PAC SWI-JACK.

 

Ok its all on the way!!

I ended up getting the kenwood DNX9140 with all the goodies (sirius, steering wheel module, camera, iPod cable...)

Cannot wait for it to get here! Ill post pics of the install and my input on the setup

 

The 9140's pretty good, I just prefer the iPod controls, both GUI and voice-recognition, of the Pioneer.