mercury mountaineer

As far as the bypass...You should have 2 options...The first option is to sacrifice a key and is usually cheaper(as long as you dont have to get another key made...!)...The second option is a No Key Required By-Pass...Usually a bit more money...But if you do NEED to replace the key you sacrificed...It usually comes to almost the same money , by the time you pay for the sacrificed key and gas and time etc...... As far as the by-pass...www.Flash-It.com...FLTBF for the no-key-required...556U for the sacrificing of key option...! Heres  the tech sheets...!

Battery		VIOLET/RED		(+)		IGNITION SWITCH HARNESS
	Ignition 1		WHITE/ ORANGE		(+)		IGNITION SWITCH HARNESS
	Accessory 1		VIOLET/GREEN		(+)		IGNITION SWITCH HARNESS
	Starter 1		BLUE/WHITE		(+)		IGNITION SWITCH HARNESS
	Anti-Theft Type		FORD PATS® OR SECURILOCK® VEHICLE IMMOBILIZER
	Anti-Theft Descript		THE KEY SENDS AN RF SIGNAL TO THE BCM MODULE THROUGH AN ANTENNA LOCATED AROUND THE IGNITION CYLINDER
	Key Sense		BLUE/GRAY		(+)		IGNITION SWITCH HARNESS
	Neutral Safety		BLUE/WHITE		(+)		AT SMART JUNCTION BOX UNDER DRIVER SIDE DASH	..ALSO AT IGNITION SWITCH HARNESS.
	Tachometer		GREEN/ BLUE		(AC)		AT PCM MODULE ON PASSENGER SIDE FIREWALL
	Speed Sense		VIOLET/ORANGE		(AC)		AT PCM MODULE ON PASSENGER SIDE FIREWALL
	Parking Lights		BLUE/WHITE		(+)		IN HARNESS IN DRIVER KICKPANEL
	Low Crr. Pk Lights		GRAY		(-)		AT VEHICLE HEADLIGHT SWITCH	...MUST ISOLATE FROM THE SWITCH WITH A RELAY
	Brake Lights		VIOLET/WHITE		(+)		AT SWITCH ABOVE PEDAL
	Reverse Lights		BROWN / BLUE		(+)		AT SMART JUNCTION BOX IN DRIVER KICKPANEL
	Horn		BLUE/WHITE		(-)		IN HARNESS AT STEERING COLUMN...THERE ARE SEVERAL SMALL GAUGE BLUE/WHITE WIRES, BE SURE TO TEST
	Anti Theft RX		VIOLET/GRAY		(+)		AT PATS MODULE
	Anti Theft TX		YELLOW/ORANGE		(-)		AT PATS MODULE
	Rear Defrost		BROWN / YELLOW...ALSO (+) GRAY/BROWN FOR HEATED MIRRORS AT SJB

	Battery		VIOLET/RED		(+)		IGNITION SWITCH HARNESS
	Ignition 1		WHITE/ ORANGE		(+)		IGNITION SWITCH HARNESS
	Starter 1		BLUE/WHITE		(+)		IGNITION SWITCH HARNESS
	All Door Trigger		YELLOW/GRAY		(+)		IN HARNESS IN DRIVERS KICKPANEL OR SMART JUNCTION BOX UNDER DRIVER SIDE DASH
	Domelight Super		YELLOW/GRAY		(+)		IN DRIVERS KICKPANEL
	LF Latch		GREEN/ VIOLET		(OPEN)		IN HARNESS IN DRIVERS KICKPANEL...THESE WIRES REST AT GROUND AND GO TO AN OPEN CIRCUIT ONCE THE DOOR IS OPENED, USE THE ALL DOOR TRIGGER
	RF Latch		WHITE		(OPEN)		IN HARNESS IN PASSENGER KICKPANEL
	LR Latch		GREEN		(OPEN)		IN HARNESS IN DRIVERS KICKPANEL
	RR Latch		YELLOW		(OPEN)		IN HARNESS IN PASSENGER KICKPANEL
	Trunk Trigger		GRAY/ORANGE		(OPEN)		IN HARNESS IN DRIVER KICKPANEL...MUST ISOLATE FROM THE SWITCH WITH A RELAY
	Alarm Disarm		GREEN/ VIOLET		(-)		IN HARNESS IN DRIVERS KICKPANEL
	Parking Lights		BLUE/WHITE		(+)		IN HARNESS IN DRIVER KICKPANEL
	Low Crr Pk Lights		GRAY		(-)		AT VEHICLE HEADLIGHT SWITCH

	Power Unlock		VIOLET/GRAY		(-)		IN HARNESS IN DRIVER KICKPANEL
	PowerLock		GRAY / YELLOW		(-)		IN HARNESS IN DRIVER KICKPANEL
	Driver Mtr Unlock		BLUE/GREEN		(REV)		AT MOTOR IN DOOR
	Driver Mtr Lock		GRAY/BROWN		(REV)		AT MOTOR IN DOOR
	Pas Mtr Unlock		VIOLET/GRAY		(REV)		AT MOTOR IN DOOR
	Pas Mtr Lock		GRAY/BROWN		(REV)		AT MOTOR IN DOOR
	LF Window Up		BLUE/GRAY		(REV)		AT DRIVER WINDOW SWITCH
	LF Window Dn		YELLOW/VIOLET		(REV)		AT DRIVER WINDOW SWITCH
	RF Window Up		BROWN / YELLOW		(REV)		IN HARNESS IN DRIVER KICKPANEL TO DOOR
	RF Window Dn		GREEN/ ORANGE		(REV)		IN HARNESS IN DRIVER KICKPANEL TO DOOR
	LR Window Up		BLUE/ORANGE		(REV)		IN HARNESS IN DRDIVER KICKPANEL TO DOOR
	LR Window Dn		YELLOW		(REV)		IN HARNESS IN DRIVER KICKPANEL TO DOOR
	RR Window Up		GRAY/VIOLET		(REV)		IN HARNESS IN DRIVER KICKPANEL TO DOOR
	RR Window Dn		BROWN / GREEN		(REV)		IN HARNESS IN DRIVER KICKPANEL TO DOOR
	Sunroof Open		VIOLET/BROWN		(-)		IN SUNROOF SWITCH HARNESS
	Sunroof Close		YELLOW/ORANGE		(-)		IN SUNROOF SWITCH HARNESS

	Headlights-Lo		BLUE/WHITE		(-)		AT VEHICLE HEADLIGHT SWITCH
	Headlights-Hi		WHITE/ ORANGE		(-)		AT HIGH BEAM SWITCH
	LF Pk Lt Bulb		BLUE/WHITE		(+)		AT FRONT LEFT PARKING LIGHT
	RF Pk Lt Bulb		BLUE/WHITE		(+)		AT FRONT RIGHT PARKING LIGHT
	LR Pk Lt Bulb		BLUE/WHITE		(+)		AT REAR LEFT PARKING LIGHT
	RR Pk Lt Bulb		BLUE/WHITE		(+)		AT REAR RIGHT PARKING LIGHT
	All Hazrd Lights		BROWN / YELLOW		(-)		AT VEHICLE HAZARD SWITCH
	LF Hazrd Bulb		BLUE/GREEN		(+)		AT FRONT LEFT DIRECTIONAL LIGHT
	RF Hazrd Bulb		YELLOW/VIOLET		(+)		AT FRONT RIGHT DIRECTIONAL LIGHT
	LR Hazrd Bulb		GRAY/BROWN		(+)		AT REAR LEFT DIRECTIONAL LIGHT
	RR Hazrd Bulb		VIOLET/ORANGE		(+)		AT REAR RIGHT DIRECTIONAL LIGHT
	Wipers-Lo		BLUE/ORANGE		(-)		AT VEHICLE WIPER CONTROL SWITCH
	Wipers-Hi		VIOLET/ORANGE		(-)		AT VEHICLE WIPER CONTROL SWITCH
	Parking Brake		GRAY/BLUE		(-)		AT VEHICLE PARKING BRAKE SWITCH
	Trnk Release		BROWN		(-)		IN HARNESS IN DRDIVER KICKPANEL
	Seat Mem 1		VIOLET/WHITE		(-)		AT SEAT CONTROL MODULE UNDER DRIVERS SEAT
	Seat Mem 2		YELLOW		(-)		AT SEAT CONTROL MODULE UNDER DRIVERS SEAT

	Module 1		PCM - ON PASSENGER SIDE OF FIREWALL
	Module 2		ABCM - BEHIND DRIVERS SIDE HEADLIGHT...PCM - POWERTRAIN CONTROL MODULE... ABCM - ANTI-LOCK BRAKING CONTROL MODULE ...SJB- SMART JUNCTION BOX
	Module 3		SJB- UNDER DRIVER SIDE DASH