I have a 2006 f150 stx very stripped down model no frills however the factory radio has an auxiliary button and an extra receptacle on the back of the radio does any one have info hopefully a part number to a wiring kit that would let me plug into the auxiliary receptacle and allow me to hook up a usb and a 3mm port for an mp3 player

 

I have the Isimple Gateway in my 05 with the Audiophile system...It has worked beautiful for me...It comes with 3 plugs (Apple 30 pin, 3.5mm, and phono). It is real easy to install, but it is pricey $189.00 on their site...it uses the aux button on mine to switch between inputs....

I have been using it for almost 10 years now...I had one go bad about 5 years ago...I just replaced the gateway part without the harness, and it was around $75 at the time...

I run my Iphone 5s with a 30-lightning apple adaptor ($40 thanks apple), sirius portable satelite radio, and a tablet at times. I bought the cable and adaptors to convert the phono to 3.5 mm...

Hope this helps!