06 f 150 wiring diagram

Go to your local stereo shop and purchase a Line Out Converter.  Let me know when you get back.  It will cost you around 20 dollars for the LOC.

	Battery		LIGHT GREEN/ VIOLET		(+)		RADIO HARNESS
	Accesory		LIGHT GREEN/ YELLOW		(+)		RADIO HARNESS
	Ground		BLACK		(-)		RADIO HARNESS
	Illumination		LIGHT BLUE/RED		(+)		RADIO HARNESS
	LF Speaker (+)		ORANGE / LIGHT GREEN
	LF Speaker (-)		LIGHT BLUE/WHITE
	RF Speaker (+)		WHITE/ LIGHT GREEN
	RF Speaker (-)		DARK GREEN/ ORANGE
	LR Speaker (+)		GRAY/LIGHT BLUE
	LR Speaker (-)		TAN / YELLOW
	RR Speaker (+)		ORANGE / RED
	RR Speaker (-)		BROWN / PINK

The Line out converter connects to the rear speaker wires at the back of the radio.   You can connect the remote wire to the accessory wire of the radio. 

With the cost of newer output chips in any radio, but especially OEM radios, I really don't encourage running speaker wires through a vehicle and have that much more of a chance of running a screw or having a door sill clamp penetrate the wire and take the radio out.  The diminished chance of taking a deck out is really worth the 20 dollar investment of the LOC.   If you can even find a repair facility near you.